This is the most unprofessional service provider I've encountered! Two weeks ago he repaired an AC…read moreunit at my rental property. When he called for payment, I told him I needed an invoice first. I returned his call to again to request an invoice. He claimed he "didn't really" get my call but the very next day showed up at my tenant's house and threatened to remove the unit for non-payment without even calling me first! I again explained I wasn't paying without an invoice. He finally sent one, and I paid the same day. I was never avoiding payment just following basic business practices. Threatening a tenant after only two weeks before sending your own invoice is unacceptable! I would never use this company again and do not recommend them.

Mirzet came out to perform maintenance on our boiler and was incredibly professional and thorough…read more He was kind and patient with our questions and even noticed an unrelated issue with our plumbing. He did an excellent job and he really knows his stuff. I highly recommend him for any of your HVAC needs.

Some time ago they installed a new gas furnace. Not long after the thermostat stopped working…read more yesterday I called for the same thing happened. A no heat call in 50 degree weather usually results in a quick response. I would have to wait five to six days before they could send someone was the message at the end if the day. In all fairness they did suggest another company. But all day without heat to wait another day is bad business. Disappointed and discouraged.

Not so good...I called today (Wednesday) for a hot water heater repair. Short notice, I agree, but…read moreit's a bit of an urgent repair,,,,within the next 24 hours would be great. I didn't expect an appointment for next Monday. Eeeesh.

I recently had Collis install a new furnace and air conditioning unit, and I could not be more…read moresatisfied with the entire experience. From start to finish, the teams' professionalism, courtesy, knowledge, and integrity truly set them apart. From my very first contact, the sales team was friendly, professional, and never made me feel pressured. They took the time to understand my needs, answered all of my questions thoroughly, and made sure I was completely comfortable throughout the selection process. Their communication and coordination were excellent. The installation team was just as impressive. They were highly skilled, professional, and kept me informed throughout the entire installation process. It was clear that they took pride in their work. Collis lives up to its family reputation for integrity, quality, and genuine care for the customer. I highly recommend Fred F. Collis & Sons Heating and Air Conditioning.

These guys really are the best. Very friendly staff and fast scheduling. The technicians are very…read morethorough and know what needs to be done. They are honest and do not recommend anything that is unnecessary. We had to reschedule our original appointment due to a last minute schedule conflict on our end and the office staff were very understanding and scheduled our air conditioning to be serviced the very next day. Excellent pricing. Just a fantastic company all around!

I don't even know where to begin regarding the disappointment, frustration and lack of…read moreprofessionalism I've experienced with this company. After expressing my concerns with the owner Jennifer Keida, I've yet to receive any feedback from her after sending numerous texts, emails, phone calls and photos relating to the completion of the new HVAC Rheem system recently installed outside my home. After the initial job was rescheduled, her team proceeded ten days later which put us in the middle of historic heat and an historic cold wave, back-to-back, in upstate NY. It all started when her technicians burnt out the wires to my furnace and never told me, so when I went to put the heat on the furnace didn't work and they knew that when they left the job. After it was inspected and validated that the wires were burnt out because they HVAC system overpowered my furnace, they had to remove the old furnace, which was weeks later and install a new furnace, but they never installed a return on the system. Air was now circulating from my raw basement throughout my home triggering a black mold situation up my walls. This was after they placed the unit practically up against my building where we were doing work, after specifically requesting that it be centered outside the back of my home. They also left all the hardware to the unit unprotected. I've emailed Jenn the owner many times and supplied photos to her and her employees with zero response. I now have to seek out alternative measures to correct the failures of her and her team. The least she could have done was replied to my emails, taking accountability and offering up suggestions on how to go about the black mold situation. I would have also liked to know when they were going to install the return on the furnace. Instead, she has offered no remedy for the actions of her technicians' incompetence. If I could have given them zero stars, I would have preferred that. I began working with this company in mid-March, it's now July. I wouldn't recommend this company, not only because they are negligent but because they also tried charging me for their mistake by offering to remove the new AC unit and putting it where it belonged in the first place. Even the smaller details like placing the wire from the thermostat around the door had to be supervised the second time because they carelessly stapled it to my walls the first time instead of neatly around the door and it fell down, so it hung for a couple of weeks adding to my frustration. I would never recommend using this company, it's poorly managed, they lack accountability, competence and respect for their customers.

I do not recommend them because they came and gave me free installation through the state program…read moreand totally destroyed my floors and won't take accountability for it.

Showed up on time and dod the work efficiently. Would hire again…read more Yada yada yada yada yada yada

Great service, communication time, and fast to come out. Would definitely hire again!read more

I've had two other companies try fix my boiler. None have fixed the issue or have had the knowledge…read moreto make it work properly. I even had a quote for $5k because they said I needed a new one. He fixed the issue(s), and I have heat again! I just wish I called him in the first place. Very reasonable prices and not trying to gouge. Absolutely the person I'll call for any HVAC or electrical needs in the future. ​

*update* in response to the reply that they don't do installs.....the picture on the website shows…read morean install. That would make it false advertising. * end of update I'm not pleased with their handling of my project. The website shows pictures of a fence install. I contacted them to set up a quote and received two text messages. First to contact them to dis uss and then today telling me they don't handle fence installs. WTH?!?! They instead referred me to someone else. I'm not pleased that this was handled this way. I doubt very much that I'll ever use them given they can't even handle normal business communication properly.

Very unprofessional business operation leaving employees on job site with no mode of transportation…read moreto and from the job site on a construction site with injury potential . The owner googling how to do the job while on the job and then not doing the job correctly. Then having a subcontractor repair mistakes on the job site for free . Leaving upset customers with incomplete jobs with no schedule to complete it

I asked for the line to be raised 6 foot off the roof of house for an addition. I was told power…read morewould be off for 1 hour. He came out and didn't have enough wire. Left for a while. Then had someone bring him supplies he didn't have. The bill was $1500. I argued and they dropped it to $1234. I was out of power for 4 hours. I got the bill 11 months later. Not professional at all!