• Office Hours: Mon-Fri 8:00am - 5:00pm (24/7 Helpline Available)
  • 610-927-5133
  • team@otthvac.com

We can provide special promotional financing to help you budget for your new unit.

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We are looking to add a qualified member to our skilled HVAC teams. If you’d like to be part of a growing, well-respected local company, please click through to the application form.


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We’re Here to Help 24/7

Emergencies never wait for a convenient time.

It always seems like the coldest nights or hottest days when your HVAC system decides to quit. Those extreme conditions DO push your unit to the brink, and we’ll be there to help when you need it.

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Let’s Figure Out What You Need!

If you are having trouble with your heating or cooling system, we can discuss the problem with you and schedule an in-person diagnostic visit. Click here to start your diagnosis.

We like to keep customers for a lifetime. To accomplish that, we make sure to provide an honest assessment of your needs and recommend the products that will provide the most efficiency and value.

Testimonials from Customers

Gutted Stone Home

“My wife and I completely gutted our stone home built in 1949. We contracted B&L to install a new heating and A/C system including all the duct work. It was a pleasure to work with them during the design and installation phase. They continue to provide excellent service twice a year during season changes. The air is super clean, and the temperatures constant during both winter and summer. Our gas bill for January 2011 was $95.00; an exceptionally cold month.”

– Dave De Poister P.E.

Indoor Air Quality Improved

“Just an update on the house, the indoor air quality has improved greatly. The new system has eliminated the odor and reduced the humidity. It is a vast improvement! We really appreciated the workmanship and attention to detail. Your crew was professional and very courteous. It was a pleasure having them at the house.”

– Deb H.

Improved Efficiency Now

“I’m writing to you to let you know how pleased I am with the new Trane XL15i that B & L Ott recenty installed on my home. I was initially hesitant, as it is a huge investment however, after giving it considerable thought I realized that if I skimp now that I would pay for it later. The system that I was replacing had been costing me dearly over the past number of years with repairs and inefficiency.”

– Joe B.

Never Felt Rushed

“The installation was great and looks very professional. I had made a list of things I wanted to make sure were done such as connecting my whole home generator etc. and it was all done. By the time I got home from work they were just finishing and it was around 4pm. Ian finished up the installation and took me around and showed me everything. I felt bad but after everything was said and done it was nearly 6pm and never did I feel rushed.”

– Robert O.

Service was Explained

“We had a Trane heating & air system installed in August 2010. We have been more than happy with the system and even more so with the service. Ryan you were awesome with explaining how the system would work and helped us to select a system that would meet our needs. Our first winter with the new system was great. We haven’t calculated what we may have saved in heating cost but we were very comfortable with the system.”

– Wendy and Bob Burnish

Improved Electric Bills

“In May we had a Trane heater and air conditioner installed by your company. I just wanted to write and thank you for advising us as to what we needed and the benefits of the higher efficiency unit along with the electronic air cleaner. We were pleasantly surprised at our electric bill for this summer, which we all know was brutal, a real test for the system. We are anxiously waiting the cooler weather to see how this unit will help us with our gas bills.

Also, we want to commend your staff on a job well done under probably the worst conditions. We had a paver patio installed prior to the Trane installation and the grounds were under repair. That day we had a steady rain and chilly temperatures. Needless to say, the ground repairs turned into a sloppy mess but your crew handled it without any complaints and made the best of the poor conditions.

– John Kutzamanis

Explained Thoroughly

“I called B & L Ott Heating and Air Conditioning this past spring to come out and evaluate my air conditioning system. I was prepared for the concept that my system was not sized properly for my home since in previous years my system ran continuously and so did my electric meter. I couldn’t bear another summer of being uncomfortable, and having high electric cost. Ryan Ott personally came to my home and spent time evaluating and measuring my home windows, doors and square footage. He also examined my existing unit. I was prepared for the news that I needed a new system, but rather the news was I need to make a few alterations as to how I live during the summer months and the recommendation of upgrading my single speed blower fan to a variable speed unit. I was not convinced that these simple alterations could make such a difference but Ryan Ott earned my trust, he was educated, honest and took the time to explain everything to me thoroughly. I decide to go with his recommendations and I am glad I did.”

– Bill S.

Helped Us Figure Out Our Cold House

“My boyfriend and I just bought a house this past December and our heating system is an Electric Heat Pump System (which is a new type of heat to me! I am so use to Gas heat) so we were having some problems with getting the house warm. Well yesterday we faced our first “welcome to being a Home Owner” problem: our house had dropped to about 40 degrees!!! My boyfriend did his best with checking the unit and the circuit breakers along with the filter, etc. nothing seemed to bring the house up to the 68 degrees we had it set at. So I knew I should call you! Your technician, Ian Good, was absolutely excellent! He was there on time, explained to my boyfriend what seemed to be causing the unit to keep blowing cold air in the house.

Ian was efficient with his time at our house, solved the issue and we got our heat to get back up to 70 degrees and it stayed that way all through the night!”

– J&R

Help with a Gutted Old House

“I hired B and L Ott to install a complete HVAC system in a 65 year old house we gutted 3 years ago. They designed, installed, and maintain the system for us. The system meets all of our needs and is very cost effective. They are a pleasure to deal with and are very professional. Their maintanance agreement is cost effective and has solved any problems we encountered. I am a Professional Engineer and know and appreciate quality workmanship and ease of operation. B and L Ott meets all of my needs.”

– Customer

A New Geothermal System

“I just wanted to pass along that Ian serviced our geothermal system yesterday and we were very impressed with his service. Ian is very knowledgeable, and I appreciated his educating me on the system. He really made me understand the system much better.

Ian was very respectful and professional; a pleasure to work with.

Thank you!”

– Wendy and Bob Burnish

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Brands We Utilize

  • trane