About Delta HVACR
Serving You & Your Family For 15 Years!
We’ve been providing quality heating and air conditioning services in Westfield, MA for the last 15 years. Contact us today and be confident in the quality of service you will receive!
- Highly Skilled & Trained Technicians
- Flexible Financing Options Available
- We Treat Our Customers Like Family

Our Story
The Tereshchuk family immigrated as Ukrainian refugees in 2001 searching for better career opportunities. The family had 16 members—two parents and fourteen children (not counting grandchildren), and came directly to Massachusetts where they’ve remained since.
Anatoliy Tereshchuk was an agriculture farmer, but graduated from Porter and Chester with an HVACR diploma. From there he did an apprenticeship and decided to open his own business.
Fedor, one of Anatoliy’s sons, had an opportunity to take over the business after some years. Fedor graduated from an HVAC program in 2008, and Delta HVACR has been serving the area for the last 15 years.

Our Team
Meat Our Technicians
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Testimonials
What our customers say
- Can't rave enough about the experience i recieved. They were very efficicent in getting to our home ASAP to get... read moreCan't rave enough about the experience i recieved. They were very efficicent in getting to our home ASAP to get our hot water heater done. I was able to purchase my own parts, and his labor cost was more than reasonable for the work he did. I had lowes quoted me for the same repair i was getting done and they were litterally 4x the price he quoted me. There also wasnt any surprises when they came. Theodore was cool and was even willing to educate me along the way. Cool people. I give them 10 thumbs up 🙂 read lessMr BammSuperb, top notch professionals! Great folks and great to work with. A++++ They were very conscious of working around... read moreSuperb, top notch professionals! Great folks and great to work with. A++++ They were very conscious of working around us during the installation. Fedor is super knowledgeable and very good at explaining technical information. They were great at finding a customized solution to an unusual challenge. They were very communicative and always let us now when they were coming. They worked on a tight schedule and completed the work exactly as forecast. Excellent quality work in all regards. read lessMichael DegenerWe had 5 mini-splits installed to upgrade our heating and add cooling to our home. Fedor and his team... read moreWe had 5 mini-splits installed to upgrade our heating and add cooling to our home. Fedor and his team did an excellent job!! They were always very professional, punctual and polite. Fedor was always available - both by phone and in person - to answer our many questions. My house is now very quiet and cool and we are enjoying our new cooling system, especially during these 90 degree days. I fully recommend this company!!! read lessJennifer Forfa
- Contacted Mass Save for a whole house mini split system had a couple people come out and give estimates and... read moreContacted Mass Save for a whole house mini split system had a couple people come out and give estimates and chose to go with this company which turned out great. They are very professional answered all my questions, fast quality insulation by far the best estimate that was given to me through three different companies. read lessJerry CDelta’s installation of a heat pump and mini-splits was very professional and efficient. They answered all my questions from start... read moreDelta’s installation of a heat pump and mini-splits was very professional and efficient. They answered all my questions from start to finish, and fully explained the system, performance and maintenance. They were also extremely detailed in their work, and went above and beyond in meeting expectations. read lessS PThis business is reliable, helpful and easy to communicate with. I have found them to be highly knowledgeable about HVAC... read moreThis business is reliable, helpful and easy to communicate with. I have found them to be highly knowledgeable about HVAC products and services as well as a resource for information on related products and services. I highly recommend Delta and am pleased with the work that they have done in my home. read lessKate Fahey
- They are responsive, show up on time, pick up after the work is done. They make certain you understand how... read moreThey are responsive, show up on time, pick up after the work is done. They make certain you understand how the system works. I would not hesitate to use them again. They put in 4 mini splits. They did a terrific job. A family owned business, Take my word, this is the company to hire. read lessAustin Porter (austin porter from Boston)The entire process from estimate to showing how to use the installed equipment was excellent. Professional, knowledgeable, great attention to... read moreThe entire process from estimate to showing how to use the installed equipment was excellent. Professional, knowledgeable, great attention to detail. I couldn't recommend the people higher. Just great install process. read lessG HammerExcellent service and attention to detail. Quality run organization. I would strongly recommend as they provided Quality work... read moreExcellent service and attention to detail. Quality run organization. I would strongly recommend as they provided Quality work for a reasonable price. Also part of the MassSave programs. read lessMark Michalski
- installation of heat pump system great company to work with all staff were very polite and professional kept all work... read moreinstallation of heat pump system great company to work with all staff were very polite and professional kept all work areas clean and safe worked around the bowling centers busy schedule read lessAgawam BowlThey installed 2 units for me and everything looks and works great. They took the time to explain and answer... read moreThey installed 2 units for me and everything looks and works great. They took the time to explain and answer all my questions thoroughly. The work was done quickly and efficiently. read lessDavid VenturaFedor of HVAC is a top notch excellent representative who takes great care to make sure the job is done... read moreFedor of HVAC is a top notch excellent representative who takes great care to make sure the job is done right. A real professional! Highly recommend!!! read lesssteve cormier
- Thorough, incredibly knowledgeable, and great craftsmanship. Anatoliy is a wonderful guy and so great to work with. Thank you!Celia OverbyAbove and beyond! We had our mini split systems cleaned and could not be happier - we'll be customers for life.Mary WetzelGreat job! Friendly, professional, the work was done neatly and all messes cleaned up when it was done.Eric Castenson
- Have used this company multiple times before and will continue to use them for my future projects!Viktor UsatyyGreat company, used their service many times. Exceptional service and customer service!Alex DemyProfessional team. Quick service. Good price. Helpful with state rebate programs.shawn mann
- Excellent work and service I can recommend without reservationdave petersonFriendly reliable service. Willing to explain things.Ed ClarkFedor, his Dad and the assistant are aces!richard olechna
- Would highly recommend this company.sharon driscollExcellent trustworthy reliable.Julie IsaevaGood detailed workLarry Pantus
- Fedor is the man!Roland Barbeito
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Ready to Get Started?
Contact Us for Quality and Expert Service
You can rest assured knowing that our team will stand by their work and your satisfaction is 100% guaranteed with us. We treat your family like our family.
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