Monday-Friday 8:30am-4:30pm


Carriage Drive, Lebanon, CT USA

We no longer offer 24/7 emergency services


Full-time, licensed service technicians wanted! Company van provided. $3,000 sign-on bonus after 6 months.

Please call (860) 617-4449 for details.

The Best HVAC in CT. Quality Solutions, One Phone Call Away.

The heating and cooling components of your home are very important to your comfort in the warmth and the cold. We provide services to prevent discomfort, in eastern Connecticut. Our #1 priority is your long-term comfort! Join our ever-growing family today!

Connecticut HVAC A/C
Connecticut HVAC Heating

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Helping Customers in Eastern Connecticut

We service most towns in eastern Connecticut and put a premium on providing thorough, top-quality service to all of our customers. In fact, we treat our customers like family which means you’ll always be well taken care of.

Frequently Asked Questions

We understand you might have a lot of questions, and rightly so. If you don’t see an answer to your question, please contact us today and we will get back to you as soon as possible.

How much money can I save by upgrading my equipment?

Modern, energy-star rated systems can be up to 60% more efficient than equipment/units that are 10 years old or older. 

Do you service central air?

Yes we do, and frequently. 

How do I know which HVAC system is right for me?

We are experts in the field and have the knowledge to conduct a full analysis to determine your energy use and operating costs. Once we have this information we can customize a system that best suits your needs.

How much does a new furnace or A/C cost?

This is a question we are asked often and it is difficult to provide an answer to without first visiting your home. There are different factors at play for each individual home including electrical, code requirements, exhaust venting, etc. We do free estimates to provide you with an accurate forecast of the cost of a new system. 

What brands do you install and service?

We work on all makes and models. Our technicians have years of experience repairing, maintaining, and installing all brands.

Customer Reviews

David is a lifesaver! DTS Oil & Gas installed a brand new gas furnace and did an excellent job after previous one irrepairably broke down. David is honest, trustworthy, caring, extremely knowledgeable and wants to see his customers happy and satisfied in every way. He is always ready to take time to listen to you and answer any questions you may have. DTS Oil & Gas is the best!! Highly recommend them!! Will be using them from now on! Thanks Dave!”


“Professional, was on time, very polite and pleasant person. Did a very thorough excellent job on my furnace and hot water burners. Highly recommend this business!”


“David took the time to make things right on my furnace,He is going to be my repair ,and maintenance guy from now on thanks👍👍”