O'Donnell Heating & Air Conditioning Inc - Buffalo video
Embedded on the company's website
Company Facts
O'Donnell Heating & Air Conditioning Inc - Buffalo at a Glance
The work
- Best for
- homeowners who want a decades-old, owner-led company with a written repair guarantee
- Primary service
- HVAC
Where
- Headquarters
- Buffalo, NY
- Service area
- Buffalo
- Emergency service
- Business hours only
Money and guarantees
- Free estimates
- Yes
- Financing
- Available
- Workmanship warranty
- Two-year guarantee on repairs
Editorial Review
Our Take on O'Donnell Heating & Air Conditioning Inc - Buffalo
A published two-year repair guarantee is a specific commitment most competitors in this market don't put in writing, and having the owner still personally quoting jobs after six decades in business is a genuine point in O'Donnell's favor.
Best for: homeowners who want a decades-old, owner-led company with a written repair guarantee
What We Like
- 4.7 rating from 437 Google reviews, read September 21, 2026
- Family-run since 1961, with owner Jim O'Donnell named directly in reviews
- Published two-year guarantee on repairs
- Lennox Premier Dealer, also works with Anzel zoning and Navien tankless systems
- Free estimates and fast scheduling described on larger replacement jobs
Things to Consider
- 4.7 rating is the most conservative among the HVAC companies on this list, though still above the site's threshold
- Company's own site lists a phone number that differs slightly from its Google listing; confirm which to call
- Specific license numbers are not published, only a general licensed-and-insured claim
Google Reviews for O'Donnell Heating & Air Conditioning Inc - Buffalo
Customer ratings shown here come from Google. They are separate from our editorial review above.
Google rating
4.7
Based on 437 Google reviews
Review data updated September 21, 2026
Rating Distribution
- 5 stars90%
- 4 stars4%
- 3 stars1%
- 2 stars0%
- 1 star5%
iAbout this distribution
The distribution reflects the 437 Google reviews available when this profile's review data was last refreshed on September 21, 2026. Ratings and counts change continuously on Google, so figures here may lag the live profile slightly. We publish only the values returned by the source, never estimates for missing bands.
Recent Google Reviews
- Deonne Pezzino5.0We had our entire heating and cooling system replaced. The entire process was problem free. They were in and out in a timely manner. We are super happy with their work. We highly recommend them!July 2026Google
- Debra Brown5.0Very happy with the service from their team today. Our hot water tank went and they came out to replace it after being on another big job in the morning. Can’t thank them enough for their service and professionalism!June 2026Google
- Olivia Hwang5.0We had a great experience with O’Donnell’s. They were professional, responsive, and incredibly efficient from start to finish. After contacting them, the owner Jim came to our house he provided us with a quote, scheduled and completed the Lennox AC and furnace installation within a week, which was much faster than we expected. The installation team was punctual, knowledgeable, and left everything clean when the job was done. We really appreciate how smoothly the entire process went. The system works perfectly and we have had no issues over the last 2 years. Highly recommend this company to anyone looking for reliable and quick heating installation service!April 2026Google
- Maria5.0On a recent Thursday, we scheduled a free estimate for the services we needed. We decided to proceed with their very reasonable estimate provided by Jim, the owner of the company. His crew showed up the following Monday (!) to replace our well-aged boiler (baseboard heating system) and hot water tank. They ensured a clean work environment, and were pleasant, diligent and knowledgeable about every detail of this job. We are very impressed with O'Donnell Heating and Air Conditioning, and highly recommend them!March 2026Google
- Moms old Tablet5.0Great service with prices to match. Very knowledgeable staff that walked me through every part of my new furnace and hot water tank. Will definitely call on them againMarch 2026Google
- L. G.5.0Amazing customer service! Dawn in the office is so helpful, kind, and realistic. She was a huge reason we went with this company. The owner came out, gave my fiancee a reasonable estimate for a new furnace, we ended up needing two, worked out a great deal. Truly a customer first business. Would highly, highly recommend them!February 2026Google
Ranked#6of 10 hvac companies in Buffalo, NYre-checked September 2026
Editorial Ranking
Why O'Donnell Heating & Air Conditioning Inc - Buffalo Made Our Top 10
It holds position 6 in 10 Best HVAC Companies in Buffalo, NY (2026).
See the Full Buffalo RankingPositions cannot be bought
Areas Served
Based in Buffalo, NY.
iAbout service coverage
Coverage is as the business describes it, cross-checked against where its recent documented work is. A company will often travel beyond the areas listed here for a large job and decline a small one at the same distance, so confirm your address before scheduling.
About O'Donnell Heating & Air Conditioning Inc - Buffalo
O'Donnell Heating & Air Conditioning has operated in the Buffalo area since 1961, and owner Jim O'Donnell is named directly and repeatedly in customer reviews, a strong signal for a company of this age that the person who built the business is still hands-on today. Olivia Hwang described Jim coming to her house personally to provide a quote before his crew completed a Lennox AC and furnace installation efficiently and professionally. Maria's review describes scheduling a free estimate on a Thursday and having Jim's crew show up the following Monday to replace an aged boiler and baseboard heating system, a fast turnaround for a job of that size.
Michael Buscaglia's review is worth reading closely: he woke to a freezing house on the coldest day of the winter, called at 8am, and had someone at the house within the hour, who then diagnosed a failed furnace and walked through replacement options rather than pushing the most expensive unit. Jon Klaybor's review makes a point about word-of-mouth trust in a market full of advertising, describing a friend's recommendation of Jim O'Donnell that held up once the work was done.
O'Donnell publishes a two-year guarantee on repairs, a specific and checkable warranty term that few HVAC companies in this market state plainly. The company is a Lennox Premier Dealer, also works with Anzel zoning systems and Navien tankless water heaters, and offers a maintenance call for $79 plus tax. Free estimates and financing to qualified customers are both advertised.
Who this suits: a homeowner who wants a decades-old, owner-led company with a written repair guarantee and fast scheduling on larger replacement jobs. Who might look elsewhere: anyone specifically comparing the highest possible star rating, since 4.7 is the lower end of what made this list, even though the underlying reviews read as strongly positive.
Before booking, confirm the exact terms of the two-year repair guarantee in writing, and ask whether Jim or another technician will be handling your specific job.
iWhere this information comes from
Company history, ownership and capability details on this page are provided by the business and reviewed by our editors for plausibility and consistency. They are not the same as the credentials block, where each item carries its own verification status and source.
Credentials
- Lennox Premier DealerReported
iWhat verified means here
Verified means we checked the credential against the authority that issues it and recorded the date. Reported means the business told us and we could not independently confirm it. We publish both, labelled, rather than dropping what we could not check.
Reputation by Source
We show each source separately rather than blending them into a single score, because they measure different things.
Google
4.7/ 5
437 customer reviews
TenBestFind
Editorially reviewed
Ranked #6 in Buffalo hvac, September 2026
Company Pricing & Estimates
What this company publishes about its own pricing.
- Free estimates
- Yes
- Financing
- Available
- Workmanship warranty
- Two-year guarantee on repairs
Local Market Pricing
What Buffalo homeowners generally pay, independent of this company.
- AC replacement, existing ductwork
- $5,500–$9,500
- Heat pump replacement
- $7,500–$13,800
- Furnace replacement
- $3,500–$7,500
- Repair call
- $150–$600
Project Photos
Business-submitted, reviewed by our editors
Project Videos
From the company's own channel and website. Loads only when you press play.
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O'Donnell Heating & Air Conditioning Inc - Buffalo FAQs
Is O'Donnell Heating & Air Conditioning licensed?
The company states it is licensed and insured but does not publish a specific license number. It is a Lennox Premier Dealer, a manufacturer credential rather than a state license. Ask for the specific New York license number before booking.
Does O'Donnell offer 24-hour emergency service?
Yes, the company's Google listing shows 24-hour availability, and a review describes a technician arriving within an hour of an 8am call on the coldest day of the year. Confirm current after-hours availability and pricing when you call.
What does O'Donnell's two-year repair guarantee cover?
The company publishes a two-year guarantee on repairs, a specific written commitment. Ask exactly what triggers a free redo under the guarantee and whether it covers parts, labor, or both, before the work begins.
Is O'Donnell Heating & Air Conditioning Inc - Buffalo licensed and insured?
We checked 0 of 1 credentials against the issuing authority. Verified items carry the date we checked; reported items are what the business told us and we could not independently confirm.
What areas does O'Donnell Heating & Air Conditioning Inc - Buffalo serve?
Buffalo. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.
Does O'Donnell Heating & Air Conditioning Inc - Buffalo offer emergency service?
Emergency availability is not listed for this company. If you need an urgent call-out, check the ranking for companies that do list it.
What warranty do they offer?
Two-year guarantee on repairs. There are usually two warranties on a job: the manufacturer covers materials, the contractor covers workmanship. Get both in writing and check whether the workmanship coverage transfers if you sell.
How was this profile built?
Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.
Can a business pay to improve its profile?
A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.
Is Something Incorrect?
Business information changes. Tell us about an address, phone, website, service area, credential or ownership change, or let us know if this company has closed.
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About This Business Profile
- Last reviewed
- September 2026
- Profile last updated
- September 21, 2026
- Google review data updated
- September 21, 2026
- Sources checked
- Issuing authorities, Google Business Profile, Company website
- Sponsorship status
- No commercial relationship