Adon provides a full range of heating and air conditioning services to the residents of Denison, TX and the surrounding areas. We pride ourselves on providing expert work and outstanding customer experience!
Read our reviews and find out why your neighbors call us for all their heating and air conditioning needs in Denison, TX.
Local Reviews
for Denison, TX
Customers say: # Review Sentiment Analysis The reviews reflect an overwhelmingly positive sentiment toward the company's HVAC services. Customers consistently praise the technicians for being knowledgeable, professional, and thorough in their work. Many reviewers highlight the clear communication provided by staff, noting how well technicians explained system issues and maintenance procedures. The service quality is frequently described as "excellent" with multiple mentions of staff going "above and beyond" expectations. Customers appreciate the technicians' attention to detail, honesty, and courteous demeanor. The company appears to have built strong customer loyalty, with several reviewers mentioning they are long-term customers or would highly recommend the service to others. The overall tone is decidedly positive, with recurring themes of professionalism, reliability, helpfulness, and quality workmanship. Customers also value the maintenance programs offered and the comprehensive nature of the service visits.
Our Reviews by City
Great job
Debra - Denison, TX 75020
2nd tech to work on HVAC outage, was fixed however a bit of rainwater in the shorted the system. Quick service! Charles explained the remaining issue, which sounds as if it would have been hard to diagnose prior to the rain storm. Thank you!
INCREDIBLE TECHNICIAN!!
Laura - Denison, TX 75020
ALEX IS AMAZING! HE ARRIVED ON TIME, WAS EFFICIENT, KNOWLEDGABLE AND THOROUGH. HE WENT OUT OF HIS WAY TO PROVIDE EXCELLENT CUSTOMER SERVICE IN REPLACING DUCTS IN MY ATTIC, EXPLAINING EVERYTHING. AND EVEN HELPED ME CONTAIN THE RODENT PROBLEM THAT WAS RESPONSIBLE FOR THE PREVIOUS DUCT DAMAGE SINCE I WAS UNABLE TO CLIMB THE ATTIC LADDER MYSELF. HE WENT ABOVE AND BEYOND MY EXPECTATIONS. WHEN I HAVE ADDITIONAL DUCTWORK DONE -- HE WOULD BE MY CHOICE FOR A TECH. ALEX DESERVES A BIG RAISE!!! THANK YOU!
Great
Walton - Denison, TX 75020
5stars thank you charley
Excellent product with outstanding service
David - Denison, TX 75020
On-time and great service
Green - Denison, TX 75020
He was there 10 minutes ahead of schedule and had us back up and running very quickly!
Outstanding service
Tucker - Denison, TX 75020
I love this company. They Take great care of me
Good service. Tech was knowledgeable and helpful
Coley - Denison, TX 75020
Matthew C.
Found issues with the pitch of the unit. Client stated he will have the company that installed it come re hang it.
Brayden W.
Performed dryer vent cleaning. Initially had the wrong vent and realized before I got the vent apart completely. Found dryer vent on roof entirely blocked up with lint. Showed homeowner pictures and everything I managed to pull out of the vent.
Shelby S.
Upon arrival, I found the system off and the indoor unit with all the doors off. I installed my short finder tool and began testing. I unwired the wire going to the outdoor unit and tested the system. The cooling would come on. I hooked the wire back up and tested again. The system would reset due to a short. I went outside and unwired the outdoor unit and tested again. The system reset again. With the information gather from a simple isolation test, I determined that the wire going from the indoor unit to the outdoor unit is shorted and needs replacement. Customer declined repairs during service.
Shelby S.
Performed maintenance on a 3 head mini split unit. It is determined that all 3 refrigerant cycles may have a leak. We will reach out on scheduling to return and check charge. Due to the weather, it was not doable during the visit. I washed all of the filters during the visit. 6/1/2026 I returned to look into the cooling issue for the mini split again. The weather this visit was more ideal. I started by hooking my gauges up to the living room refrigerant line. The pressure was at 93psig. I began adding refrigerant to it and got it to 130psig. This took right at 1 pound of 410a. I tested the supply air on all of the indoor heads. The living room is now producing 52 degree air, the infants room is producing 55, and the other room is producing 55. I have no additional concerns after adding the refrigerant to the living room unit. The odd readings on the other two must have been due to the weather. System is cooling upon departure. The living room unit was low on R410a
Shelby S.
I performed a single cooling maintenance on a 2022 gas system. I thoroughly examined the electrical, drains, cleanliness, filtration, safeties, and operation. The system is cooling well but NEEDS cleaning. The system is is full of residue that will begin to cause issues in the coming years. I observed that the outdoor unit does not have a surge protector to protect the outdoor electrical from damage associated with power fluctuations.
Shelby S.
Upon arrival, I discovered a system not cooling well. I had a very poor temperature split. I opened the evaporator and found that it was half frozen. I proceeded to do a quick check to see if I could get any alerts on my leak detector. The leak detector indicated that refrigerant is present in the the cabinet, and I found an oil residue in the primary drain pan. I ordered the evaporator coil and it is available in Garland. The office will reach out with a time frame for installation.
Brayden W.
1. Visually inspected condenser coil for leaks and abnormalities. 2. Inspected condenser fan motor, blades and bearings. 3. Inspected, cleaned, and, tightened wiring connections. 4. Measured capacitance of compressor/fan motor capacitor. 5. Inspected and measured resistance of contactor 6. Measured compressor current draw. 7. Measured condenser fan motor amp draw. 8. Inspected and replaced return filter. 9. Inspected return plenum for dust or debris. 10. Inspected evaporator coil for cleanliness and oxidation. 11. Inspected blower motor/ blower wheel for dust and debris 12. Measured blower motor current draw. 13. Measured temperature differential from supply to return. 20 degrees measured. 14. Tested drain lines for proper drainage and treated to prevent blockages. 15. Rinsed condenser with water to promote heat exchange and reduce stress on system by removing dust and debris. Found bad capacitor outside not under warranty. Advised replacement to avoid system failure and wear on ele
Matthew C.
Preformed single system maintenance on a 2024 carrier gas. I tested all electrical components on the inside unit. All tested within manufacturer specifications. I treated and tested drain lines with total x and water. All drained well. I did not changed the filter for the client at today's visit. Client will need to buy aprilaire 410 filters. I explained how to install the filter and where to buy them at. I tested all electrical components on the outside unit. All tested within manufacturer specifications. I rinsed the unit with water at todays visit. I did leave estimates for full system surge protectors to insure the clients system was protected in case of a lightning strike or other surges in power that can cause damage.
Matthew C.
Checked over duct work. Client had the system installed 2 years ago. Duct did not need to be cleaned at this time. Client did sign up for annaul maintenance plan.
Brayden W.
Performed drain line unclogging. Vacuumed out line to coils and sucked water out. Blew drain line out with nitrogen and flushed line with water several times to ensure blockage was entirely clear. (Videos included). Tested drain line with gallons of water and found no evidence of further blockage. Tested system functionality and found all to be working as intended.
Shelby S.
I performed a single cooling maintenance on a 2018 gas system. I checked amps, capacitor, filter, electrical, drains, cleanliness, and safeties. During my thorough evaluation, I discovered that the reme halo bulb is burnt out and needs a replacement to become active again. Also, the blower wheel has build up present and could use cleaning. Mechanically, the system is performing well.
Brayden W.
1. Visually inspected condenser coil for leaks and abnormalities. 2. Inspected condenser fan motor, blades and bearings. 3. Inspected, cleaned, and, tightened wiring connections. 4. Measured capacitance of compressor/fan motor capacitor. 5. Inspected and measured resistance of contactor 6. Measured compressor current draw. 7. Measured condenser fan motor amp draw. 8. Inspected and replaced return filter. 9. Inspected return plenum for dust or debris. 10. Inspected evaporator coil for cleanliness and oxidation. 11. Inspected blower motor/ blower wheel for dust and debris 12. Measured blower motor current draw. 13. Measured temperature differential from supply to return. 20 degrees measured. 14. Tested drain lines for proper drainage and treated to prevent blockages. 15. Rinsed condenser with water to promote heat exchange and reduce stress on system by removing dust and debris. Found capacitor testing at 42.7/45. Absolute minimum of 42.3 Mf. Recommended replacement of capacitor in or
Brayden W.
1. Visually inspected condenser coil for leaks and abnormalities. 2. Inspected condenser fan motor, blades and bearings. 3. Inspected, cleaned, and, tightened wiring connections. 4. Measured capacitance of compressor/fan motor capacitor. 5. Inspected and measured resistance of contactor 6. Measured compressor current draw. 7. Measured condenser fan motor amp draw. 8. Inspected and replaced return filter. 9. Inspected return plenum for dust or debris. 10. Inspected evaporator coil for cleanliness and oxidation. 11. Inspected blower motor/ blower wheel for dust and debris 12. Measured blower motor current draw. 13. Measured temperature differential from supply to return. 20 degrees measured. 14. Tested drain lines for proper drainage and treated to prevent blockages. 15. Rinsed condenser with water to promote heat exchange and reduce stress on system by removing dust and debris. Found a good amount of stuck on debris and discoloration from dust on the outside condenser coil even after
Brayden W.
Performed dryer vent cleaning from roof. Pictures included. Large blockage at the roof line.
Matthew C.
Upon completion of my thorough I tested all electrical on the inside unit, I tested all the electrical components and all tested within manufacturer specifications. I treated and flushed the drain lines with totalc and water. I changed the filter for the client 16x25x4 Aprilaire 413. Temperature being supplied to the home is at 53 degrees. I tested all electrical components on the outside unit all tested within manufacturer specifications. I found the unit to not have any type of surge protection, by adding surge protection you can help prevent any potential damage caused by lightning strikes or other types of surges in power. Also the condenser could benefit from having a deep chemical cleaning done. It will help with the performance efficiency of the unit. I rinsed the unit with water and the unit was cooling upon departure.
Matthew C.
Upon arrival client stated here was no cool air being blown out of the vents in cooling mode. I noticed there was no condenser outside where it should be. I asked the homeowner if she knew she didn’t have one. We walked around the house to insure that it wasn’t moved to a different location. I did not find a condenser. It looks like the unit was cut out for unknown reasons. Offered to have comfort advisor come out but client would like to get back with us on it. The air handler is from 2021 it’s does function in heating.
Brayden W.
Performed maintenance on 2022 Trane furnace. 1. Visually inspected condenser coil for leaks and abnormalities. 2. Inspected condenser fan motor, blades and bearings. 3. Inspected, cleaned, and, tightened wiring connections. 4. Measured capacitance of compressor/fan motor capacitor. 5. Inspected and measured resistance of contactor 6. Measured compressor current draw. 7. Measured condenser fan motor amp draw. 8. Inspected and replaced return filter. 9. Inspected return plenum for dust or debris. 10. Inspected evaporator coil for cleanliness and oxidation. 11. Inspected blower motor/ blower wheel for dust and debris 12. Measured blower motor current draw. 13. Measured temperature differential from supply to return. 14. Tested drain lines for proper drainage and treated to prevent blockages. 15. Rinsed condenser with water to promote heat exchange and reduce stress on system by removing dust and debris. Only measured 58-59 degree air supply. 75 return temp. Noticed blower wheel was star
Brayden W.
1. Visually inspected condenser coil for leaks and abnormalities. 2. Inspected condenser fan motor, blades and bearings. 3. Inspected, cleaned, and, tightened wiring connections. 4. Measured capacitance of compressor/fan motor capacitor. 5. Inspected and measured resistance of contactor 6. Measured compressor current draw. 7. Measured condenser fan motor amp draw. 8. Inspected and replaced return filter. 9. Inspected return plenum for dust or debris. 10. Inspected evaporator coil for cleanliness and oxidation. 11. Inspected blower motor/ blower wheel for dust and debris 12. Measured blower motor current draw. 13. Measured temperature differential from supply to return. 20 degrees measured. 14. Tested drain lines for proper drainage and treated to prevent blockages. 15. Rinsed condenser with water to promote heat exchange and reduce stress on system by removing dust and debris. Noticed no search protection on either outdoor unit. Advise. Search protection to protect expensive circuit
Brayden W.
Performed maintenance on 2018 Trane heatpump and 2024 Trane Minisplit. 1. Visually inspected condenser coil for leaks and abnormalities. 2. Inspected condenser fan motor, blades and bearings. 3. Inspected, cleaned, and, tightened wiring connections. 4. Measured capacitance of compressor/fan motor capacitor. 5. Inspected and measured resistance of contactor 6. Measured compressor current draw. 7. Measured condenser fan motor amp draw. 8. Inspected and replaced return filter. 9. Inspected return plenum for dust or debris. 10. Inspected evaporator coil for cleanliness and oxidation. 11. Inspected blower motor/ blower wheel for dust and debris 12. Measured blower motor current draw. 13. Measured temperature differential from supply to return. 20 degrees measured. 14. Tested drain lines for proper drainage and treated to prevent blockages. 15. Rinsed condenser with water to promote heat exchange and reduce stress on system by removing dust and debris. Capacitor was testing low but within
Shelby S.
I performed a single cooling maintenance on a gas system. The furnace is from 2013 and the evaporator coil/condenser are from 2021. I throughly examined the amps, capacitors, filters, electrical, drains, rinsed the outdoor unit, cleanliness, and safeties. I discovered a couple of deficiencies during today’s visit. I noticed that the outdoor unit and blower wheel are in need of cleaning. The outdoor unit being dirty causes strain on the electrical components and reduced performance of the equipment. The blower wheel being dirty causes similar issues. In addition to those issues, it will wear the motor down faster causing premature failure. The outdoor unit currently does not have surge protection. The capacitor power the compressor is testing out of range and failing. This adds unnecessary stress to the compressor. I provided options to address these items during service. Customer declined all options during time of service, and the system is cooling upon departure.
Matthew C.
Upon completion of my thorough evaluation of the ducts and inside system, I found the blower wheel to be extremely dirty. This can push the dust onto the evaporator coil as well. Affecting air quality, performance and efficiency of the unit itself. The client stated he is having a lot of dust come out when the unit comes on. By having the full system cleaned we can help combat some of the allergens.
Matthew C.
Upon completion of my thorough evaluation of the downstairs system. I found that the evaporator coil, blower wheel and condenser coil could benefit from having a cleaning done. By cleaning these major components you can keep the unit running at peak performance and efficiency. All other electrical components tested within manufacturer specifications. The outside unit was testing within manufacturer specifications. I rinsed the outside unit with water. The upstairs unit was down upon arrival. After my thorough evaluation I found the compressor windings from common to start and run terminals were testing at 87 ohms with no continuity. Which tells me the compressor windings are bad. I presented findings to the homeowner and she elected to hold off for any type of replacement right now.
Shelby S.
Upon arrival, I discovered that the system was giving a stuck open pressure switch error code. I followed the power coming out of the control board through the pressure switch and back to the control board. The pressure switch is operating properly. I determined it was making bad contact back at the control board simulating the pressure being open. Amana and Goodman units are known for this issue. I tightened the connections in the plug and control board. The system powered on and I tested the heating. The system is heating well, but this issue could come back. I offered to replace the control board. I referenced a universal board that I have in my van. According to the information with the universal control board, it is not an option for this model of control board. I called standard supply, and they were closed for the day. We will reach out in the morning to price a replacement control board.
Shelby S.
Upon arrival, I discovered that the electrical plug that the system was using for a power source was becoming faulty. I moved the plug to a different location and got the unit working. I tested the system and spoke with the homeowner about options. After a in depth conversation, the homeowner elected to invest into a new system before summer arrives. The system is known to have a R22 refrigerant leak that dates back to July 2025. The install is scheduled for 3/21/2026 at 8am to 9am arrival time. I waved the service fee during the visit.
Brayden W.
Upon testing the outdoor unit, I found the capacitor to be testing at about 6mfd out of 40. This would cause the compressor to not be able to pump. Replaced capacitor and tested unit to ensure functionality. Found all to be working well with normal unit operation. 54 degree supply measured. Found drain line clogged and leaking at the sink. Drain line is draining out of secondary drain line for the time being. However there is a lot of rust in the drain pan and it is only a matter of time until the water in the pan rusts through and comes through the ceiling. Homeowner would like to try to remedy the issue himself. Homeowner would like to schedule a Mid April Friday midday 10-2. Unit in good working order upon departure.
