T&J Service LLC, Heating & Cooling

T&J Service installed a beautiful new Trane system at my home in Fairfax on May 14, 2024. They were recommended to me by my neighbor who has been using them for many years. Without a doubt, Diep and Tran are the most highly-skilled HVAC professionals that I have encountered in over 40 years. This was a very large, complex system to install and they got it done in one day. These are some of the hardest working, most dedicated guys that I've ever seen! I absolutely love my new Trane system. They even custom made a beautiful plenum for my air handler --handcrafted out of stainless steel (Diep is also a skilled metal craftsman). 5 STARS

They have fixed and maintained my a/c and heating systems for years and are always quick, reliable, and reasonably priced. I highly recommend them.

This is a contractor we all want to find, to hire someone that will not try to talk you int.o a new furnace when the thermostat just needs to be reprogrammed after replacing weak batteries. The service man tested a few electrical components on the furnace, and he concluded that the furnace was not the problem. His service call lasted less than an hour, I learned a few things, and the temperature is no longer 57 but a more comfortable 72.

I needed immediate service and they can and fix the issue I had very professional

I have called my Home Warranty because my heating system will not turn on, United Air Temp arrived and start replacing parts and took them around 2 weeks to tell me you need a new system I called the Home Warranty again and I asked them for a 2nd opinion, Yazd Mechanical came and told me the same thing, you need a new system. Now it's been a month without heat and luckily it wasn't that cold, I had to buy some portable heaters to get by. My colleague told me to call Diep from T&J Services, and I did, Diep told me that someone miss/ wrongly wired the system, he reconnected everything the way it supposed to be, changed a copastor/booster in the outside unit, and everything is working fine, Thanks Diep for an honest and affordable job. We truly need more of you.

Prompt, courteous, professional

Diep is very knowledgeable and takes the time to explain everything. He is very professional, honest and capable. I wish he was located closer to me so that I could use him for smaller jobs as well.

Diet was awesome and amazing--perfect service, an excellent and expert professional!! Extremely highly recommended---10 stars!!!

Diep is truly knowledgeable in his craft. He came to my home and was able to diagnose issues with the installment of new thermostat. He understood the HVAC system in my home, fixed potential long-term issues, and even made a few more requested modifications for little additional costs. He saved me time and the headache of dealing with unqualified phone personalities of the thermostat company that installed my thermostat. Most of all, his price was extremely reasonable. I would highly recommend his company to ANYONE with HVAC issues.

Honest, informative, and helpful service technicians.

The technician who responded was prompt, courteous, knowledgeable and helpful. He reviewed the problem and offed solutions. We settled on a solution that was less expensive than several he reviewed...no push to go with a more expensive alternate.

They were prompt and helpful. Now it's working!

They came on time, were ready with what was needed, and explained it all to me.

They showed up on time and did an outstanding job in the a new programmable thermostat. They check the entire system to ensure the system was working properly and also program my thermostat.

These two gentlemen are courteous, punctual, professional and cheerful! They service both our heating and A/C every year , have done a few additional plumbing jobs and are unfailingly reasonably priced and honest in their estimates and appraisals. I whole-heartedly endorse them.

Very polite and smart. Took them awhile but the found the problem (electrical) that prevented my floor heating thermostat from working