Top Furnace Maintenance Services in Frederick, MD

I wanted to install an AC system in my home and got three estimates. One company didn't do ductless systems (which I decided I wanted) and another dropped the ball, so I ended up going with Michael Bonsby, who also offered to do the job for ca. $3000 les...

They replaced my gas furnace/AC and a spacepak heatpump system within the last year. They also have done my maintenance for 3 years. Their mechanics are knowledgeable,communicative and polite. They are all required to take hvac continuing education class...

I got my furnace and AC replaced with this company in August 2017. I also had a full aeroseal of my ducts. After about a year, I had some problems with ducts leaking into my cabinetry. They came out and had the ducts insulated (at my expense even thoug...

Michael Bonsby replaced our furnace and AC unit in early spring 2017. The estimator was very thorough and professional. The quote was by far the most informative including explanation of the heat load calculations and why the system size was recommended....

The equipment appears to be excellent

OUR AIR CONDITIONING COMPRESSOR WENT OUT DURING THE HOT PART OF AUGUST. I DID NOT KNOW WHO TO CALL SO I LOOKED UNDER CARRIER AND ASKED FOR HELP. tHE NEXT DAY WE GOT A CALL FROM DAWN OF YOUR COMPANY WHO IMMEDIATELY SENT ABEL WHO QUICKLY FOUND THE PROBLEM...

We just bought our home and were looking for a contractor to replace existing 33 year old furnace and 18 yr old AC unit. Six contractors provided proposals to replace both units. Chris from Michael Bonsby was the only salesperson who performed a load calc...

I appreciate the services from Michael Bonsby.All is very good. I will recommend to my friend. Thank you very much for all. Michael

Our central air stopped working. We called Chris from Michael Bonsby to try and get it fixed quickly. He actually came out that evening, and developed a proposal while in our home. He was very well informed and was low pressure. We called the next day...

I converted my heating system from oil to natural gas and they did an excellent service installation. The entire experience was very relaxing and done on schedule. I would not hesitate to recommend this company to anyone looking for hvac services. Thanks ...

Our compressor had failed and the technician took a look over the rest of a fairly old system and gave us options. We opted to have the whole thing replaced. In the meantime a freon top up kept us cool. The replacement was done a few days later and took o...