In mybookHome Collection (edit)
Added to your home collection.
Removed From mybook!

We took this business out of your home collection.

Harster Heating & Air Conditioning

Add to mybook

This listing has been
added to mybook.

This listing has been
removed from mybook.

Business Details



in Business

Call today!
BBB Rating:
BBB Rating and Accreditation information may be delayed up to a week.
BBB Accredited businesses follow the BBB Code of Business Practices and pay a fee for accreditation review and monitoring. Accreditation is not a BBB endorsement or evaluation of the business’ product quality or competency in performing services.

BBB Rating and Accreditation information may be delayed up to a week.
Social Links:
Visit Facebook Page

Regular Hours

Sat - SunClosed

General Info:
We’ve got a long history in south St. Louis. Our company was started by my dad, Emil F. Harster, in 1950. It was a one-man, one-truck company and it’s grown to 28 employees and 24 trucks today – serving some 20,000 St. Louis Metro residents and businesses. We’re located in Affton (yup, John Goodman’s hometown), in an historical building that was once my grandfather’s hardware store. I’ve been the owner, manager, chief cook and bottle washer of Harster since 1986. My philosophy’s always been “the customer’s always right”, and to do good work and to charge a fair price. Funny how some companies just don’t get that. Our customers are loyal because we follow that code. I insist on industry certification and honest, ethical practices. It’s a pretty simple recipe, actually, and one that’s a tradition I hope continues for many more years.
Extra Phones:

Phone: (636) 464-7837

TollFree: (800) 633-2093

  • Furnace Repair, Boiler Repair
  • Commercial
  • Residential
Commercial, Residential, bryant, heil, tempstar
Payment method:
discover, master card, visa, amex, diners club, all major credit cards
On Gravois Between Tesson Ferry And Mackenzie
Affton, Affton Terrace

St. Louis County Mechanical

Air Conditioning Contractors of America

Air Conditioning Service & Repair, Furnaces-Heating, Air Conditioning Contractors & Systems, Heating Contractors & Specialties, Air Conditioning Equipment & Systems, Heating Equipment & Systems, Boilers Equipment, Parts & Supplies, Boiler Repair & Cleaning, Furnace Repair & Cleaning
Other Information:

Specialties: Heating & Cooling, Commercial Grade, Boilers, New Appliances

Services: Furnace Repair, Boiler Repair, Commercial, Residential

Emergency Service: Yes

Free Estimates: Yes

Same Day Service: Yes

More »

Less »



Review this business:
Click to Rate
Share Review

Like this review? Share it on your social network to get the word out!


I called Harster after my ac w...

I called Harster after my ac went out. They gave me a two hour window for service and were out in 45 minutes. The service man was nice, informative and helpful. He told me about a coupon they had online that saved me $20. The price was reasonable.



Provided by Citysearch - 
Professional and Efficient

Harster replaced our furnace and a/c, January 2012. The sales person was very pleasant and thorough in his quote and in his explanation of the products as well as follow-up with us. Harster didn't ""guess"" at what products we needed for our home. The sales rep. came out and measured/evaluated the products we would need carefully. Our choosing Harster was based on the product, price and the sales rep's knowledge. (We also rec'd quotes from 2 additional carriers.) On the day of the installation we had no less than 6 men working at the house and the sales person came as well. I was very impressed by the company and the professional respect they each showed while in our home. The sales rep also was very familiar with rebates that were available with the products. I absolutely would recommend this company. We felt valued as a customer and the company treated us as such.


Fast, Reliable, Honest

My AC broke towards the end of the weekend. I called Harster, since they had such good reviews and a friend of mine recommended them, Monday morning. Even though they were busy they setup an appt with me that afternoon. The tech came to my house and ran some tests, he explained everything to me and let me know what the problem was (low on Freon or whatever they use now). He recharged the system and even did a few maintenance things for free. After he was done he reviewed in detail the bill and offered the maintenance plan, it was such a good deal I signed up for it too. Thanks Harster!


Unbelievable service experience

I would like to share my experience with Harster. When your air goes down in the summer in St. Louis, you need it fixed fast. I also don't have the luxury to shop around much because I work and had to set up an appointment. Numerous appointments would have been difficult. I had to hope I chose someone honest and reputable. Not only did their technician (Jerry) fix my AC but he schooled me on what to expect in the future. He told me all my options depending on what he found to be the problem and never tried to sell me. Being ignorant in this field, he could have told me anything and knew it. Same day service, on time for the appointment and professional all the way. I will definately use them for any future needs in the HVAC field. I've never taken the time to write one of these reviews but felt it necessary to acknowledge this fine company.


Harster gives exceptional service

I have my a/c and furnace checked each year by the service people @Harster. They are prompt, professional, reasonable and give good advice for the upcoming seasons. I appreciate this company and recommend them to anyone

Send to Phone
Harster Heating & Air Conditioning

9900 Gravois RdSaint LouisMO 63123

(314) 658-9625

Send this business listing as a text message to a mobile phone.


Your text message was sent.

To opt out at anytime, send the word STOP to YP411.

To get a help message, send the word HELP to YP411.

There was an error sending your text.

Please try again.

Terms: The recipient of this text message may incur charges depending on their wireless carrier. Not all carriers are currently supported.

Message Business

What would you like to know?



We were unable to send your message. Please try again later.

Add a Photo
Harster Heating & Air Conditioning

9900 Gravois RdSaint LouisMO 63123

(314) 658-9625

  • Photos should be in .gif, .jpg, or .png format
  • Photos should represent this business (ex. storefront, interior, services/amenities offered, etc.)
  • Photos must not be of an objectionable nature (offensive, profane, pornographic, obscene, etc.)
  • All photos submitted are subjected to YP Terms of Service
Add a New Collection
Oops! There was a problem saving the new custom collection.
Please try again.
Collection Name cannot be empty
Upload a Photo

Remaining Characters: 100

Remaining Characters: 500

We just redesigned! Do you like it?
× Not a Fan

× Thank You!