Heating and Air Conditioning, Heating Oil, Energy Efficiency Auditing
About us
Specializing in new system installs, System replacement, indoor air quality products such as humidifiers, EAC electronic air cleaners, ductless systems (mini splits) & Wi-fi thermostats. Providing both light commercial & residential service in St. Louis! Our #1 priority is your satisfaction!
Business highlights
9 years of trusted experience
Emergency Services Offered
Services we offer
We specialize in central air conditioning system installation, service and repairs. We offer a variety of air treatment systems to improve the quality of air in your home as well. We offer industry leading heating systems installation, service and repairs too.
I previously worked with another company to replace my furnace. The first company was extremely flakey and would constantly cancel my appointments or simply not show up. Eventually, I decided to go on Angie's List, and I found Siefert Mechanical. This company was extremely quick to get to my house, give me an estimate, and then perform the service. Not only did Siefert Mechanical quote me a price that was $600 less than the first company, they also never cancelled or missed an appointment. They came out once to give me a quote, then the very next time they came out to my house, they replaced my furnace. The quality of their work is extremely professional, and I would HIGHLY recommend this company for any heating/cooling service you need performed.
Description of Work: Complete furnace replacement
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$2,000
Response from Siefert Mechanical - Heating & Cooling
thank you very much for the kind words and thank you very much for your business you are a pleasure to work for!!
Rich R.
01/2021
5.0
heating & air conditioning/hvac, energy audit
+ 0 more
Everything was done in a timely manner. The job was done at a very reasonable price. Chad and his helper Nate were both very knowledgeable and professional. I would highly recommend you using Seifert Mechanical for all of your HVAC needs!!
Description of Work: Install the full system heating and air conditioning as well as a new humidifier and filter system also ran a dryer vent
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
thank you very much sir for your business, it was a pleasure working for you!!
Todd M.
01/2021
5.0
heating & air conditioning/hvac
+ -1 more
Great experience. I would recommend to anyone.
Description of Work: installed full system
Rating Category
Rating out of 5
Yes, I recommend this pro
Danny B.
01/2021
5.0
heating & air conditioning/hvac
+ -1 more
Awesome Chad and his guys were polite professional and efficient I would recommend him to anyone
Description of Work: installation of new furnace and humidifier
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
we value you as a customer and appreciate your business thank you very much
Ritchie O.
01/2021
5.0
heating & air conditioning/hvac
+ -1 more
Went amazing without a hitch. Great people over there and Chad treated myself and my home with great respect and sense of family! Definitely recommending to others!
Description of Work: service repair
Rating Category
Rating out of 5
Yes, I recommend this pro
Keith S.
12/2020
5.0
heating & air conditioning/hvac
+ -1 more
They did a great!! Job!!! I told them what my furnace was not doing. He immediately knew what the problem was. Fixed it fast with out any additional charge. I was expecting some additional diagnostic fees, and or parts to fix the problem. He was most honest, and up front. I would recommend them to anybody!! Thank you so much for your help!!!!
Description of Work: Repaired and cleaned a sensor in my furnace.
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
Ty very much for your kind review
amy F.
06/2020
5.0
heating & air conditioning/hvac
+ -1 more
I hired Chad to install central AC during a big renovation project at my house. The installation went smoothly, he came back with a very fair price vs the other estimates I received. I had a lot of issues with my contractor and Chad had to deal with some things that I feel weren't fair to him. But he handled it awesome and I am so grateful. Reaching out again for additional work this year!
Description of Work: AC Installation
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
Mike W.
01/2020
5.0
heating & air conditioning/hvac
+ -1 more
Excellent service! Showed up on time and completed work even faster than I though. I would highly recommend!
Description of Work: clean and check furnace as well as added a heat run to a bedroom
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
thank you for taking a second to give me a review we greatly appreciate it
Dawn S.
01/2020
5.0
heating & air conditioning/hvac
+ -1 more
Amazing job done he put registers in my basement and cleaned everything up and came in under estimate will have him doing all my HVAC work
Description of Work: Heating and Air Conditioning
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
Thank you very much for your business! You and your sister were a pleasure to work with for sure.
Modesto L.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Great contractor. Our condenser unit was seating too low on the ground and was getting dirt all over the bottom of the unit. Siefert Mechanical came over and raise the unit up for us. Mr. Chad Siefert and his crew were very professional and punctual. Great communication. I love Chad's genuine willingness to have the job done right providing suggestions and solutions that were perfect for what we needed done. Thank you!!
Description of Work: Raised up the outside condenser unit
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$325
Tiffany J.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Chad was amazing to work with. He was flexible and able to work around my schedule. We have had our air conditioner, hvac and hot water heater all installed by Siefert Mechanical. I highly recommend to anyone looking for a reliable, knowledgeable and honest company!
Description of Work: service work as well as installation work
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
thank you very much for your review you are one of my favorite customers
Rick C.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
We had Chad install a new system in our home and we are very satisfied with his work. He is very professional and detail oriented..Would highly recommend him to anyone.
Description of Work: service/installation
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$5,000
Paul S.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Chad did a great job and did it quickly along with the area was clean when he was done. Great job Chad
Description of Work: furnace installation/repair work
Rating Category
Rating out of 5
Yes, I recommend this pro
Mike P.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Chad was excellent with my elderly mother. He kept her informed of what was going on at all times. He also gave her several options rather than trying to push her into the biggest and most expensive units. Very impressed!!
Description of Work: install new sytem
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
Pam S.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Chad was on time. Very pleasant. Completed the job in a timely manner & cleaned up.
Description of Work: furnace installation as well as service
Rating Category
Rating out of 5
Yes, I recommend this pro
Mike K.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Very smooth and a clean professional install. No hidden costs. We are very happy with our new A/C unit.
Description of Work: install AC system/service repair work
Rating Category
Rating out of 5
Yes, I recommend this pro
Tim T.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Great! I had other well known companies out to give me estimates and clearly I was not given a reasonable estimate! I didn’t feel I could trust their estimates. With Chad and his company I felt very confident that I was getting a very reasonable estimate. Besides the cost being almost half of the other estimates! The job was performed quickly and professionally! This is my go to company.
Description of Work: Repair work on air conditioner. Air conditioner was running but not cooling the house. Chad came to the house within a hour. After analysis had the air running better than new! Great service and very reasonable price. And he returned a few days later to make sure everything continued to run well.
Rating Category
Rating out of 5
Yes, I recommend this pro
Kristin R.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Extremely professional and helpful, diagnosed and fixed the problem timely. Would definitely recommend and use again.
Description of Work: air conditioning repair work
Rating Category
Rating out of 5
Yes, I recommend this pro
Dion J.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Chad’s service was great! He’s a pro. Very knowledgeable and informative with his craft. He let me know all the things to look out for and to keep up on to keep things running smooth.
Description of Work: service repair work as well as installation of HVAC equipment
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$2,500
Barry K.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Excellent. Top notch mechanical repair and installation. Excellent Communication and extremely competitive pricing.. My go to for Remodel and rehab hvac.
Description of Work: service/install
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
[Member Name Removed] thank you very much for taking time to give us a review. we greatly appreciate it and we also value your business...
Jay S.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Excellent. Chad was friendly and professional. He takes pride in his work; did a great job!
Description of Work: HVAC service repair work and maintenance, as well as HVAC replacement
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$1,800
Response from Siefert Mechanical - Heating & Cooling
Thank you for your review, and business.
James S.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Outstanding. Our home ac quit on us on a very hot day in August. Company came same day as promised, and got it fixed same day. Would definitely recommend
Description of Work: service repair work on HV AC equipment
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
we appreciate your business and also thank you for taking a second to give a review that means a lot to us
Krystal C.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Amazing work, very friendly, EXCEPTIONAL prices, PROFESSIONAL! I would absolutely hire them again and reccomend them to everyone
Description of Work: furnace replacement
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
Matt C.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Siefert mechanical did a amazing job. Very friendly and quick to respond. Didn’t try to over sell and went out of his way to make sure I was up and running on weekend. A+++
Description of Work: air conditioning repair and new system
Rating Category
Rating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Yes, I recommend this pro
$1,300
Gustavo E.
12/2019
5.0
heating & air conditioning/hvac
+ -1 more
Siefert Mechanical has completed more than 15 jobs for us with the utmost professionalism and honesty. The owner Chad is our #1 preferred HVAC contractor in St. Louis. Highly recommended!
Description of Work: installation of HVAC equipment
Rating Category
Rating out of 5
Yes, I recommend this pro
Response from Siefert Mechanical - Heating & Cooling
thank you very very much for your business and looking forward to the future working with you. Also thank you for the review!
All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.
*Contact business to see additional licenses.
Service Categories
Heating and Air Conditioning,
Heating Oil,
Energy Efficiency Auditing
FAQ
Siefert Mechanical - Heating & Cooling is currently rated 5 overall out of 5.
Monday: 7:00 AM - 5:00 PM
Tuesday: 7:00 AM - 5:00 PM
Wednesday: 7:00 AM - 5:00 PM
Thursday: 7:00 AM - 5:00 PM
Friday: 7:00 AM - 5:00 PM
Siefert Mechanical - Heating & Cooling accepts the following forms of payment: American Express,Check,Discover,MasterCard,Visa
Siefert Mechanical - Heating & Cooling offers the following services: We specialize in central air conditioning system installation, service and repairs. We offer a variety of air treatment systems to improve the quality of air in your home as well. We offer industry leading heating systems installation, service and repairs too.