HVAC TOP CHOICE WINNTERS GTA
July 2021
Company Facts
AccuServ Heating and Air Conditioning at a Glance
The work
- Best for
- combi boilers, tankless water heaters and all-electric conversions
- Primary service
- HVAC
Where
- Headquarters
- Toronto, ON
- Service area
- 3 cities
- Emergency service
- Yes, 24/7
Money and guarantees
- Free estimates
- Not advertised
- Financing
- Not advertised
Editorial Review
Our Take on AccuServ Heating and Air Conditioning
A 4.9 from 558 Google reviews, read September 16, 2026, plus a published TSSA registration number, gives AccuServ more verifiable credibility than most. Its reviews show real skill with combi boilers and electrification projects, which are hard to find done well. The warranty terms are not easy to find on the site, so get them on paper.
Best for: combi boilers, tankless water heaters and all-electric conversions
What We Like
- 4.9 rating from 558 Google reviews, read September 16, 2026
- Publishes its TSSA registration number on its website
- Strong track record with Navien combi boilers, tankless water heaters and hydronic systems
- Handles gas-to-electric conversions, according to customer reviews
- More than 30 years in business and 24/7 service
Things to Consider
- Warranty terms are not easy to find on the website
- Financing and free estimate policies are not stated
- Service area is centred on Toronto and East York
Google Reviews for AccuServ Heating and Air Conditioning
Customer ratings shown here come from Google. They are separate from our editorial review above.
Ranked#6of 10 hvac companies in Toronto, ONre-checked September 2026
Editorial Ranking
Why AccuServ Heating and Air Conditioning Made Our Top 10
It holds position 6 in 10 Best HVAC Companies in Toronto, ON.
See the Full Toronto RankingPositions cannot be bought
Services Offered
Specialties
- Tankless water heaters
- Renovation work on older Toronto homes
- Air conditioning repair, service and replacement
- Boiler service and repair
- Fireplace repair
- Tank water heater inspection, troubleshooting and replacement
- Tankless water heater repair, maintenance and installation
- Ductwork repair and installation
Areas Served
Based in Toronto, ON.
- Toronto, ON · HQ
- Concord, ON
- East York, ON
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 AccuServ Heating and Air Conditioning
Woodbine Avenue north of the Danforth is quiet, residential East York, and AccuServ Heating and Air Conditioning has worked from there for a long time. The website says the company has more than 30 years behind it, and it publishes a TSSA registration number, which not every contractor bothers to do. It also mentions being named in the Toronto Top Choice Awards in 2021 and 2022.
The service list is broad but has a clear technical lean. There is standard furnace and air conditioning work, plus boilers, hydronic installations, ductwork, fireplaces, and tank and tankless water heaters. AccuServ also lists general contracting, which helps when a mechanical upgrade touches walls or ceilings. Lennox, Navien and Ecobee are among the brands it features, including Navien combi boilers.
Reviews show why people seek the company out for harder jobs. One homeowner in their seventies wrote a first-ever review after AccuServ sorted out a Navien combi boiler that another installer had left with problems for years. Another describes switching a gas furnace and water heater to an all-electric system and choosing AccuServ after comparing several options. Others mention a tankless water heater install that came with a clear walkthrough, and an Airbnb host whose AC died with one day between guests and got it replaced in time. Office staff and technicians are named often, which suggests a stable team.
The company advertises 24/7 service. It does not publish its warranty terms on the main pages, so ask for them in writing. Combi boilers and tankless heaters also need regular descaling and servicing, so it is worth asking about a maintenance plan while you are at it.
Who it suits: homeowners with combi boilers, tankless water heaters or hydronic heat, and anyone planning a move from gas to heat pumps and electric water heating. It is also a good match for people who want a contractor with a published TSSA number. Who it suits less well: people who only need a basic AC tune-up and want the cheapest seasonal special.
Before booking an electrification project, ask for a load calculation, confirm whether your electrical panel needs an upgrade, and check which government rebates the quoted equipment qualifies for.
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
- TSSA Registered ContractorTechnical Standards and Safety Authority · 000194975Reported
- Toronto Top Choice Award 2021 and 2022Top Choice AwardsReported
- HVAC licence000194975Reported
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
4.9/ 5
558 customer reviews
TenBestFind
Editorially reviewed
Ranked #6 in Toronto hvac, September 2026
Company Pricing & Estimates
What this company publishes about its own pricing.
- Emergency callout
- Available 24/7
Local Market Pricing
What Toronto 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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AccuServ Heating and Air Conditioning FAQs
Can AccuServ service a Navien combi boiler?
Yes. Reviews describe AccuServ fixing a Navien combi boiler another installer had left with long-running problems. It also installs tankless water heaters and hydronic heating systems.
Is AccuServ TSSA registered?
Yes. Its website publishes TSSA registration number 000194975. It also mentions wins in the Toronto Top Choice Awards for 2021 and 2022.
Does AccuServ handle switching from gas to all-electric heating?
Yes. One reviewer describes AccuServ replacing a gas furnace and water heater with an all-electric system. Before starting a project like that, ask for a load calculation and check whether your electrical panel needs an upgrade.
Is AccuServ Heating and Air Conditioning licensed and insured?
We checked 0 of 3 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 AccuServ Heating and Air Conditioning serve?
Toronto, Concord, East York. 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 AccuServ Heating and Air Conditioning offer emergency service?
Yes, the company lists emergency availability. Response time depends on demand, and after a storm every company in the market is stretched.
What warranty do they offer?
Warranty terms are not on file. Ask for them in writing before work starts.
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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iWhat claiming does
Claiming lets you correct and maintain the factual information on this profile. Claiming or upgrading a profile does not guarantee inclusion in a TenBestFind ranking and never affects ranking position, which is decided editorially.
About This Business Profile
- Last reviewed
- September 2026
- Profile last updated
- September 18, 2026
- Sources checked
- Issuing authorities, Google Business Profile, Company website
- Sponsorship status
- No commercial relationship