The Trusted St. Louis HVAC Contractor

If you’re looking for a trustworthy heating and cooling contractor that provides best-practice craftsmanship with integrity, then you’ve come to the right place! Our only goal is your 100% satisfaction when it comes to living in a more comfortable, energy efficient home in the St. Louis area and beyond.

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314-370-1816

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UP TO $4,375 SAVINGS OFF HEATING & COOLING SYSTEMS

0% INTEREST WITH NO PAYMENTS FOR 12 MONTHS; subject to credit approval

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OTHER ATTRACTIVE FINANCING OPTIONS AVAILABLE

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HVAC Services

Stay cool. Get cozy. Our heating and cooling services keep you comfortable all year long.

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Indoor Air Quality

Breathe easy. We make sure the air in your home is clean and safe.

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Improve Comfort

Turn your home into the oasis it can be.

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Energy Efficiency

Be green, save green, and be comfortable.

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Heating and AC Repair and Replacement in St. Louis

Finding a heating and cooling contractor near you that you can trust is one thing, and often times finding a contractor that is available 24/7 is another. Fortunately for homeowners throughout the greater St. Louis area, SmartHouse makes it our day to day business to be both for our customers! The NATE, ENERGY STAR Missouri, and Building Performance Institute certified team at SmartHouse is dedicated to finding the right solutions for your home comfort, saving you energy and increasing the health of your indoor environment.

From AC Replacement & Furnace Repair to Zoning & Home Performance Services

SmartHouse offers an extensive array of heating, cooling, diagnostic, and improvement services for both existing homes and new construction jobs. Not only can we repair and maintain any make and model of air conditioner, heat pump, boiler, or furnace, we can also diagnose your home performance issues through a comprehensive analysis of your home, then recommend the right home improvements to reduce your heating and cooling needs. From there, we can handle your AC and furnace replacement with new equipment that is perfectly sized, to save you money on your energy bills for years to come!

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The Best Equipment, The Best Price

Homeowners make the Smart Choice because they know we stand behind our work, and because SmartHouse is dedicated to delivering reliable quality at the best possible price. We always offer multiple options for improving the efficiency and affordability of your home, like innovative Daikin, Carrier and Mitsubishi systems. But you can rest easy, knowing your home comfort needs will always take precedence over any kind of sales quota. We can even reduce the cost of your AC or furnace installation through our list of rebates, incentives, and financing options!

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Award-Winning, Trusted Experts in St. Louis Home Comfort

The SmartHouse team is a proud recipient of the BBB Torch Award for outstanding ethics and integrity. The BBB Torch Award speaks to our shared mission of providing the community with trustworthy and reliable HVAC and home performance services. Learn more about our commitment to keeping the Greater St. Louis community safe and comfortable and our mission to bring accessible, energy-efficient heating and cooling solutions to all homes in the area or call us now at 314-270-1545.

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SmartHouse is Available 24/7

At SmartHouse, our knowledge, training, positive attitude toward service, and business ethics makes us the “Smart Choice” for all of your heating, cooling, efficiency, and comfort needs. However, you don’t just need our expertise during “usual” business hours — when you need emergency HVAC services, we're here to cater to your schedule. When you call SmartHouse, you will:

Speak to a live person, any hour of any day

Get access to emergency HVAC service 8am - 7pm Weekdays; 8 am to 5pm Weekends & Holidays.

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Overall Rating

5.0 329 reviews

Review Us

				I’ve used SmartHouse for years — great company! Fast, friendly, and knowledgeable. At a fair price, too!
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Bill M.
5/15/2025
				Nick is wonderful, knowledgeable, and dependable. Recommend
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Rebecca B.
5/14/2025
				The crew did an awesome job. They came out with four or five guys and worked tirelessly to install our new air conditioner and furnace. They also installed two smart thermostats and program them for us. In addition, they made two separate trips to optimize the smart, thermostats, free of charge.Great company and I would give them my highest recommendation.
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Jeffrey A.
5/12/2025
				Excellent service and thoughtfulness!
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Steele R.
5/09/2025
				Great technicias. Wonderful work. Highly recommended.I
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Werner G.
5/07/2025
				Everything is professionally installed . Great system
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Daysofnoah c.
5/06/2025
				Zack was great, explained the problem and fixed my furnace to my satisfaction. Neat, courteous and very personable technician.
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Patty K.
5/06/2025
				Really appreciated the quick response and resolution of my HVAC issue. I’ve lived in three different buildings; SmartHouse (or its predecessor) has managed the HVAC systems in all places. I feel I’m a pampered client!
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Cheryl W.
5/02/2025
				A very competent and personable technician was dispatched for an A/C issue in which he quickly resolved.
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Michael M.
5/01/2025
				Excellent service and attention to detail
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JR W.
4/23/2025
				Decided to be proactive and replace my 24 year old central air conditioner before it quit during a heat wave. SmartHouse sent out Specialist Tim the same day I called. He answered all my questions, took measurements, fully explained my options and gave me quotes on 2 replacement models. We accepted one bid and were able to schedule the install for the very next day. Because our appointment filled the last opening in their installation schedule, Tim gave us a sizable discount. Ryan and his install crew arrived on time the next day, explained everything, completed the install and gave me another discount for paying with a check. It was a very easy, quick, and professional experience. Thanks to SmartHouse I now have piece of mind for many cooling seasons to come.
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Richard L.
4/08/2025
				We have used this company for years. Always so nice to deal with employees and service is exceptional.
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Ellen C.
4/02/2025
				The technician Bob was very thorough with the inspection. He was able to explain everything clearly and point out the issues.
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David T.
4/02/2025
				We had Troy Wilson out to our house to check our AC and heating unit. He was knowledgeable and provided great information on what we need. He very professional in his deamnor and respectful of our home.
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M L.
4/02/2025
				Marcus, went right to the source of the problem and got our humidifier running again. The staff at Smart House provides great customer care.
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Bob M.
3/31/2025
				The technician was professional and did a great job despite a difficult access to the condenser. All of the people I have worked with are highly competent and willing to take the time to find a good solution to problems rather than the most expedient. Locally owned small business that charges a reasonable rate unlike companies that routinely price gouge. I highly recommend SmartHouse.
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Sandy J.
3/15/2025
				Nick did a great job explaining what happened to the air conditioning unit and what was needed to repair. He took the time to update me on my AC unit.
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Terry C.
3/14/2025
				Recently had heating and cooling installed by Smarthouse. We had a great experience from the initial consultation to the installation. Marc came to our home and spent time reviewing our current system and explained different options. Other companies that we considered didn't come close. We felt confident in using this business.
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Susan A.
3/12/2025
				Really impressed with the service we received, very friendly and quickly diagnosed the issue. Technician came out at 7pm to fix our furnace and had it up and running in no time. We will be using SmartHouse for all future HVAC needs.
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Robert C.
3/12/2025
				Smart House was great to work with, quick and courteous communication, reliable and fair on price!
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E F.
3/12/2025
				Marc and his team are true professionals and Steven’s craftsmanship is incredible. We had some unique challenges in our older home and they took the time to develop a plan that made sense. We replaced two units with them and had both return and supply duct work done and our home is quieter and more comfortable than ever. Thanks guys!!
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Paul S.
3/05/2025
				SmartHouse Heating and Cooling were on time, efficient, and delivered a solution during our service call. We have been happy with their work and professionalism. They are top of our list for our heating and cooling needs.
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Adrienne A.
2/18/2025
				Great customer service. Very professional. Will recommend to anyone who needs furnace, Ac system. + we also replaced water heater with the plumbing company they referred, and they were great as well! Thanks for your great work 👍
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Hull M.
2/18/2025
				Very pleasant person who set me up with an appointment. Texted when the technician was on the way. Marcus was prompt , courteous and knowledgeable. He came to install a smart thermostat and in doing so, identified a previously unknown issue and fixed it pronto. He also gave me information about A/ C systems that was extremely helpful as we will be needing one soon. Highly recommend SmartHouse Heating and Cooling.
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BMS
2/17/2025
				Marc was very knowledgeable about the heat pump system I wanted to be installed. The team went out of their way to make sure my wife understood the app and how to control the new system. They installed a properly sized return air duct and took their time making sure everything looked good as well as performed flawlessly. I highly recommend you give them a chance you won't be disappointed.
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John L.
2/17/2025
				Always wonderful, kind and helpful.
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Anna S.
2/17/2025
				Jay is very friendly and worked hard on my house. I have no complaints about him. But right after I cleaned up all the mess due to the attic work (Jay offered to do but I told him I would do), the system failed again. I am certainly very frustrated. The system is only two years old. How can it have so many problems when it is supposed to last for more than l0 years.
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Bo L.
2/16/2025
				Service was prompt and friendly.
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Michael V.
2/13/2025
				Frank is the best technician I’ve ever had.
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Barrington T.
1/16/2025
				Nick did a great job with coming out and accessing our situation. He was knowledgeable, professional and answered all of my questions. I would use them again in the future.
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David W.
1/13/2025
				Awesome job. The technician was truly a blessing
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Terri C.
1/13/2025
				Super friendly, quick turnaround on install. Great prices and warranties:
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Chase M.
12/19/2024
				Scott resolved the problem and informed me about what might be needed. He did a fine job.
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Steven P.
12/15/2024
				We called Smart House for a second opinion after another HVAC company told us the circuit panel needed to be replaced for $900 or we might consider replacing the entire furnace. Smart House got to us the same day we called them, found a short in the wiring to our humidistat, rewired a few wires and got us up and running in an hour. Their technician saved us a boat load of money. Thank you Smart House for your honest and fairly priced service!
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Kellye M.
12/15/2024
				These guys are friendly, professional, and extremely knowledgeable. Strongly recommend.
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Laura D.
12/15/2024
				"Cool Jay" showed up on time, was very polite and professional. I was referred to your company by my aunt. I am quite pleased and confident that you guys are our new service technicians. Thank you!
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Melodie M.
12/08/2024
				These guys are the best! They work and care for our house as if it was theirs.
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Charles B.
12/08/2024
				The serviceman Scott was very knowledgeable and friendly and took care of my boiler. I will definitely use them again. Price was reasonable also for what he had to do.
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Stephanie D.
12/08/2024
				Smart House arrived within 24 hours for a non-emergency call. They charged me $30 less then quoted and was professional throughout the process with update calls and a great disposition. Thank you!
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Warren M.
12/08/2024
				My HVAC Technician Nick came earl than the scheduled appointment time. Nick was tremendously helpful at diagnosing the issue and gave me great advice on how to keep my HVAC running smoothly moving forward. I definitely recommend this company. I was satisfied with my services.
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Jasmine B.
12/08/2024
				Great company and technicians! Spend the time to walk you through what they’re doing and give honest advice and recommendations!
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Yosef G.
12/08/2024
				SmartHouse beat the competition with a promt return call after a busy holiday blistering cold weekend. Nick H provided an accurate time of arrival; he consulted me and resolved my heating problem swiftly. Nick is highly professional and got the job done right. Thank you!
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Frank K.
12/08/2024
				The technician was very polite and friendly. Explain what he was checking and told me what was the problem. Will recommend to family and friends.
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Tracie S.
12/08/2024
				Smart house heating and cooling did a great job repairing my furnace the technician was polite and professional and worked digitally to fix my problem
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Virginia J.
12/08/2024
				Our HVAC system was replaced by SmartHouse in the late-summer of 2023. They serviced the units earlier last week as part of a pre-paid semi-annual maintenance program. Yesterday, we noticed the upstairs unit wasn’t working. Even though it was a holiday weekend, they dispatched an on-call technician to diagnose and correct the problem before the upstairs got too cold. We couldn’t be happier with SmartHouse!
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Scott R.
12/08/2024
				Marcus was very helpful and knowledgeable.
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Jai R.
11/22/2024
				Jeremy was my technician we started off a little rocky lol but he got the job done in a professional manner. I would recommend him
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lisa B.
11/22/2024
				Like this Company a lot. They installed my system 10 years ago and it didn’t need any major work until this year. They are responsive and efficient.
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Deirdre G.
11/16/2024
				SmartHouse Heating and Cooling is amazing. Starting with Marc the owner, he came out and was extremely knowledgeable and down to earth. He went the extra mile to explain the technology and equipment. The install team was very courteous and respectful. They were able to move quickly and efficiently to install a complex system. I am excited about my new system and can’t wait to take advantage of all the efficiencies. I can’t recommend SmartHouse Heating and Cooling enough.
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Brandon W.
11/16/2024
				On time, explained everything, found best option for our situation, installed new furnace quickly. Long relationship with Smarthouse has never disappointed.
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Dick B.
11/09/2024
				Very professional and knowledgeable. Zack kept me informed the whole time and asked if I had any questions. I would definitely recommend them to others.
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Jerome A.
11/09/2024
				Efficient, thorough, and very helpful service. I definitely recommend working with them and will be using them again in the future.
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Nikki O.
11/09/2024
				Outstanding service, very knowledge tech, I am very impressed and pleased.
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Ted D.
11/02/2024
				SmartHouse Heating & Cooling did an excellent job replacing our HVAC system. From the front office to the installation team, SmartHouse was professional, responsive, polite, efficient and a terrific value.
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Lisa B.
11/02/2024
				Smart house is rhythm with smart people, who know how to win and keep customers. Most of all they a very professional business. Wendell
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Wendell
11/02/2024
				The Installation of a new furnace and AC unit was accomplished with professionalism, competency, and the highest level of craftsmanship. They had to first take out a 25+ year old system, and obviously all of the various lines, pipings and sheet metal ductwork we’re not about to line up with the more modern, compact and advanced system. But they reconfigured everything beautifully, on budget and on time. I recommend them highly.
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Bud C.
11/02/2024
				They're proving to be pretty good
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Mike W.
10/24/2024
				Bryon was most helpful. He was very knowledgeable.
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GAILE A.
10/22/2024
				We just had our first experience with SmartHouse, and I feel so relieved! Nick H., our technician, was knowledgeable and kind and I would recommend him and the team to anyone looking for pros they can trust. It was an easy decision to become members! Thank you so much!
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Sarah B.
10/19/2024
				Good company. I've been using them for over 25 years
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Carol S.
10/19/2024
				Great job, Zach! Thank you! Mila
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velimila v.
10/18/2024
				I have used Smarthouse for several years for my business and home. I have tried other national and local companies and this is the best. The technicians go above and beyond, the office staff is awesome, and I appreciate the thorough and practical explanations. I found them on google and tried them out because they were well rated and another local place was falling short on service and responsiveness. I am glad I did. Smarthouse has delivered time and time again with the quality of their service. As a business owner (and homeowner for that matter), having a company you trust is such a big deal. This place is a winner.
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Carly M.
10/18/2024
				Very professional service
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Tamsin M.
10/18/2024
				Professional and knowledgeable. Earned my confidence and a call back!!!
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Kevin H.
10/18/2024
				The employees of SmartHouse are prompt and courteous. A couple of years ago we purchased our heating and air conditioning units from them and have been very satisfied.
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Alison L.
10/04/2024
				So glad this is our go to hvac co. Always pleasant experience with their reps.
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Roman P.
9/24/2024
				It's Saturday. I'm trying to install a new smart thermostat and blew a fuse. The technician was WONDERFUL and so helpful. They were faster, more helpful, and their rates are less than the company who installed the unit for the previous owner. I'll be calling SmartHouse for my HVAC needs from now own. Highly recommend! Thank you!!!
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Susan H.
9/20/2024
				Great guys, great service they showed fast on a Saturday. Would highly recommend
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brian h.
9/20/2024
				The tech fixed our capacitor issue with no problems. He was very professional and top notch. I found my HVAC company for the future!
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Joshua Z.
8/27/2024
				Very friendly, knowledgeable and highly professional service! 👏 👏!
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Vladimir M.
8/27/2024
				Showed up on time, gathered information and started the diagnostic . Found the problem , corrected the issue. I was kept abreast of every step taken to get my unit up and running . I truely appreciate their professionalism .
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Nathaniel D.
8/22/2024
				I was really impressed with the Technician, Jay. He diagnosed the problem and got my AC up and running! He was very professional and patient with me and my many questions!! thank you, Jay.
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Pauline T.
8/22/2024
				Fast response to emergency. Work was completed in record time.
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Norm O.
8/22/2024
				My tech Marcus was terrific, honest, educated me on my system, and worked without wasting time. I look forward to my winter maintenance with Marcus this fall.
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Dark &.
8/15/2024
				The team at SmartHouse are very knowledgable. What's more, I'm extremely impressed with their customer service. Our new Water Furnace geothermal unit was faulty, and recently failed completely. SmartHouse really jumped right to getting a new unit installed under warranty, as well as providing mobile AC units for our house until the new Water Furnace was ready. I highly recommend SmartHouse.
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b s.
8/08/2024
				My house AC had a miner problem. The company quickly solved the problem.
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Jane K.
7/30/2024
				I’ve gone to SmartHouse for home upgrades, regular seasonal maintenance, and now a repair involved in an insurance claim. They have been extremely responsive, easy to work with, and informative to me, the homeowner. Great company
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Nelson L.
7/27/2024
				I am so pleased with the service I always receive with SmartHouse heating and cooling company. I trust them with any work if needed on my furnace/ air conditioner. I would recommend them to the whole WORLD.
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Carrie H.
7/25/2024
				Always great service
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Dustin G.
6/05/2024
				If you want the very best in service, SmartHouse has the very best people that know what they are doing. No short cuts here. They are on time or a little early for appointments.
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Michael M.
5/08/2024
				Smart House is the best! Great and timely service. The staff knows their “stuff”!! Fair pricing for the excellent service they provide. We have been delighted with Smart House.
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Melissa W.
5/06/2024
				I called Smart house for a second opinion on some thing and boy am. I glad I did. They were able to save me thousands of dollars.
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Suzanne E.
5/01/2024
				Excellent HVAC System Replacement Experience - 5 Stars! I recently had the pleasure of engaging the services of SmartHouse Heating and Cooling for the replacement of my HVAC system, and I must say that the entire experience surpassed my expectations. Here's why I believe this company deserves 5 well-earned stars: Impeccable Installation: The installation process was carried out with remarkable expertise. The technicians were not only punctual but also conducted themselves with the utmost professionalism. They took the time to ensure that every aspect of the installation was executed with precision, leaving me confident in the longevity and performance of the new system. And explaining how everything works to an interested customer. Transparent and Detailed Quotes: The company excelled in providing detailed and transparent quotes. I truly appreciated the effort that was put into explaining every aspect of the quotes, ensuring that I was fully informed about the costs, the scope of work, and the timeline for the project. It's rare to find a company that prioritizes transparency to this extent, and it's definitely worth commending. Exceptional Customer Service: From the first point of contact to the completion of the installation, the customer service provided was nothing short of exceptional. Every interaction was characterized by attentiveness, responsiveness, and a genuine commitment to ensuring customer satisfaction. Overall, I can confidently say that SmartHouse Heating and Cooling has set a new standard for professionalism, quality of work, and customer service in the HVAC industry. I wholeheartedly recommend them to anyone in need of heating and cooling services.
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Nick H.
4/30/2024
				Awesome company and service!! Very impressed with their willingness to listen to our needs and situation and to tune their recommendation accordingly . We replaced our A/C and furnace - no issues. They were very prompt. Really appreciate Marc who clearly answered our many questions and appreciate his staff Stephanie, Liz and others who helped us with financing and scheduling. I fully recommend and trust this team.
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Shaun S.
4/30/2024
				Time for a check and clean. Gotta keep the systems going. Very efficient and timely service .
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Robert W.
4/30/2024
				I've used SmartHouse for years and recommend them wholeheartedly. They've always resolved my issues quickly and for less money than other contractors. I plan to entrust them with a major renovation of my AC system and furnace. They strike me as honest and efficient. I've only had great experiences with this company.
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William G.
4/23/2024
				Top notch company with top notch service. Highly recommend!
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Barbara L.
4/23/2024
				He was professional friendly and fast. Didn’t try to add stuff or spend money we don’t really have. Honest man . Will definitely call again for any repairs. Great company
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Jennifer M.
4/23/2024
				Ryan and his crew did a great job with the installation. Duct work was top-notch. Even helped with replacing a broken gas shutoff valve on my water heater while they were there. Very impressive!
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Tim V.
4/16/2024
				I couldn’t recommend SmartHouse more highly - they are thorough, reliable, and completely trustworthy. Special shout out to Bob Going, the best!
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Alison M.
4/07/2024

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Why Skipping AC Tune-Ups Can Cost You More Later. Skipping your air conditioner’s annual tune-up might seem like a small way to save money now, but it often leads to higher costs down the road. Neglecting regular AC maintenance can leave you coming home to a hot, humid home on the day you need cooling most. Routine maintenance keeps your Read more...

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AC Repair vs. Replacement: How to Know Which Is Right for You

AC Repair vs. Replacement: How to Know Which Is Right for You. When your AC isn’t cooling properly, you’re faced with a common homeowner dilemma: should you repair your current unit or replace it altogether? The decision typically comes down to the unit’s age, repair costs, reliability, and energy efficiency. This guide will help you weigh your options and understand Read more...

The Trusted St. Louis HVAC Contractor

Get Ready for Summer!

UP TO $4,375 SAVINGS OFF HEATING & COOLING SYSTEMS

HVAC Services

Indoor Air Quality

Improve Comfort

Energy Efficiency

Heating and AC Repair and Replacement in St. Louis

From AC Replacement & Furnace Repair to Zoning & Home Performance Services

The Best Equipment, The Best Price

Award-Winning, Trusted Experts in St. Louis Home Comfort

SmartHouse is Available 24/7

Latest Blog Posts

Why Skipping AC Tune-Ups Can Cost You More Later

Heat Pump FAQs for Homeowners

AC Repair vs. Replacement: How to Know Which Is Right for You

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