Toronto's Enbridge Red Tag specialists
Toronto HVAC Repair, Installation & 24/7 Red Tag Response
Best HVAC Toronto is a TSSA-certified, HRAI member HVAC contractor serving Toronto and the Greater Toronto Area (GTA) with a 2-hour typical emergency response. We specialise in Enbridge Red Tag removal, cracked heat exchanger diagnosis, furnace repair and high-efficiency furnace installation, central air conditioning, boiler and hydronic heating, cold-climate heat pump systems, gas line and BBQ hookups, and tank and tankless water heater installation. Every technician is a TSSA-certified gas technician licensed to G1 or G2.
Our specialty is 24/7 emergency HVAC dispatch for residential and commercial customers: no-heat winter calls, no-AC summer failures, Enbridge Red Tag response, and cracked heat exchanger verification with combustion analyzers. With over 20 years of combined field experience across the GTA, our crew handles the full HVAC lifecycle from same-day diagnostic repair to planned high-efficiency installations with Ontario Home Renovation Savings (HRS) rebate paperwork handled on your behalf.
Whether you need overnight Enbridge Red Tag clearance, a rebate-eligible cold-climate heat pump installation, a two-stage condensing furnace replacement, or a commercial rooftop unit service contract, our TSSA-certified crew handles it under one contract. We diagnose with combustion analyzers, static pressure gauges, and refrigerant subcool and superheat readings before we recommend anything, and every quote is fixed in writing before work begins.
- 24/7 gas & no-heat emergencies
- 2-hour typical GTA response
- Free estimates on installs
Diagnostics from $150 (2026 pricing). Free on-site estimates on every installation.
- Years of combined experience
- 20+ Years combined experience
- Average review rating
- 4.9 From 150+ reviews
- Typical red tag gas restoration
- 24hr Typical gas restoration
Request a callback
Send three details and we will call you back. For emergencies, please phone us.
- 4.9 (150+ reviews)
- TSSA G1/G2 Certified & $2M Insured
- 2-Hour Emergency Response
- Manufacturer-Authorized Dealer
Manufacturer Partners
HVAC brands we install and service across the GTA
Common problems
No heat, no air conditioning, or a red tag on your meter?
These are the calls we take every week, from century homes in Leslieville and The Annex to post-war bungalows in Scarborough and North York. Each one has a straightforward answer once someone qualified actually looks at it.
Enbridge shut off your gas
A red tag means no heat and no hot water until a licensed technician clears it. We respond across the GTA in two to four hours and restore most services within 24 hours.
Furnace or AC failed today
A dead furnace in January or a failed air conditioner in a July heat wave is not a next-week problem. We hold same-day weekday capacity for furnace repair and AC repair, and dispatch 24/7 in an emergency.
Rebates and options are confusing
Heat pump, dual fuel, or a straight furnace replacement? We model the numbers for your home, confirm rebate eligibility, and complete the paperwork for you.
You have been quoted without explanation
Every job gets a written quote before work starts, with the findings explained in plain language. No hidden fees, no pressure, and no scare tactics about heat exchangers.
We start with a proper diagnosis, then give you an honest recommendation. Book a free assessment
Our services
Residential and commercial HVAC services in Toronto
From an Enbridge red tag at midnight to a planned heat pump upgrade with rebates, a tankless water heater swap, or a boiler replacement in a semi-detached home, the same TSSA-certified crew handles it. That covers detached houses, condo townhouses, and commercial rooftop units alike.
Full service catalog grouped by category below.
Heating
Heating Services in Toronto
Cold-climate heating installation, repair, and emergency response across Toronto and the GTA. Furnace, boiler, and cold-climate heat pump work performed by TSSA G1 gas technicians with same-day weekday capacity for no-heat calls.
View full heating services overview
Furnace Installation & Repair
High-efficiency condensing gas and electric furnace installation with Manual J load calculation, plus same-day diagnostic repair for ignition failures, blower motor faults, and heat exchanger issues across the GTA.
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Boiler Installation & Repair
Condensing combi boiler installation and hydronic system repair, including cast iron retrofit, PVC/polypropylene venting, low-water cutoff diagnostics, and outdoor reset control commissioning for Toronto homes.
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Emergency Furnace Repair
24/7 emergency dispatch for no-heat calls in winter cold snaps. Cracked heat exchanger verification, ignition failure, blower motor, limit switch, and pressure switch diagnostics with same-day repair capacity.
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Furnace Tune-Up
Annual furnace tune-up with combustion analyzer readings, heat exchanger inspection, blower motor amperage check, gas pressure calibration, and CO safety test. Recommended every fall for maintenance-plan compliance.
Learn moreCooling
Cooling Services in Toronto
Central AC, ductless mini-split, and emergency cooling repair across the GTA. SEER2-rated installations with R-454B refrigerant readiness, same-day heat wave dispatch, and load-calculated sizing.
View full cooling services overview
Air Conditioning Installation & Repair
Central AC installation with proper Manual J load sizing, SEER2/EER2 efficiency compliance, and same-day diagnostic repair for capacitors, contactors, refrigerant leaks, and frozen coils.
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Ductless Mini-Split Installation
Single-zone and multi-zone ductless mini-split installation with inverter compressor and NEEP cold-climate listing. Condo-board coordination and SEER2/HSPF2 sizing for Toronto retrofits.
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Emergency AC Repair
Same-day dispatch during summer heat waves. Capacitor, contactor, refrigerant leak, frozen coil, and thermostat diagnostics for central AC and ductless mini-splits, with R-410A to R-454B refrigerant support.
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Air Conditioning Tune-Up
Annual AC tune-up with condensate line clearing, coil cleaning, refrigerant subcool and superheat readings, capacitor microfarad test, and thermostat calibration. Recommended every spring.
Learn moreGas & Compliance
Gas Line & Enbridge Red Tag Compliance
TSSA G1 and G2 certified gas line installation, appliance hookups, and 24/7 Enbridge Red Tag emergency response. Cracked heat exchanger verification, Type A and Type B tag clearance, and full TSSA documentation across the GTA.
View full gas & compliance services overview
Enbridge Red Tag Emergency Compliance
24/7 Enbridge Red Tag response with Type A and Type B tag clearance. Cracked heat exchanger verification with combustion analyzer, TSSA-documented sign-off, and Enbridge relight coordination within 24 hours on most calls.
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Gas Line Installation & BBQ Hookups
TSSA-permitted natural gas line installation for furnaces, water heaters, BBQs, stoves, fireplaces, and standby generators. Schedule 40 black iron pipe or CSST, pressure-tested and permit-filed across the GTA.
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Gas Fireplace Installation
Natural gas fireplace installation, wood-to-gas conversion, direct-vent and B-vent options, insert vs full unit selection. CSA B149.1 compliance with TSSA permit handling and carbon monoxide detector integration.
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BBQ Gas Line Hookup
Standalone natural gas line installation for outdoor BBQs, fire tables, fire pits, and outdoor kitchens. Quick-disconnect valve, pressure test, and CSST or black iron runs sized to appliance BTU load.
Learn moreWater Heaters
Water Heater Services in Toronto
Tank, tankless, and hybrid water heater installation with power direct venting, descaling service, and Ontario rental water heater buyout and return coordination for Reliance and Enercare customers.
View full water heaters services overview
Tankless Water Heater Installation
Condensing on-demand tankless water heater installation from Navien, Rinnai, and Bosch. Domestic hot water flow rate sizing, power direct vent installation, concentric venting, and annual descaling flush service.
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Tank Water Heater Installation & Repair
Conventional tank water heater installation and replacement in gas, electric, or hybrid heat pump configurations. Rental water heater return coordination with Reliance and Enercare, and sacrificial anode rod replacement.
Learn moreHeat Pumps
Heat Pumps & Ontario Rebates
Cold-climate air-source heat pump installation with dual-fuel hybrid options and full Ontario rebate paperwork. Home Renovation Savings program, Canada Greener Homes Loan, and Enbridge HELP program applications handled on your behalf.
Heat Pump Installation
NEEP-listed cold-climate air-source heat pump installation with HSPF2 sizing, defrost cycle optimization, and auxiliary heat strip integration. Dual-fuel hybrid setup available for Toronto winter performance below -25°C.
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Ontario Heat Pump Rebate Filing
Full rebate paperwork handling for Ontario heat pump installations. HRS program up to $4,500, Canada Greener Homes Loan up to $40,000 interest-free, and Enbridge HELP program stacked where eligible.
Learn moreEmergency
24/7 HVAC Emergency Response
Live-answered 24/7 dispatch for gas emergencies, Enbridge Red Tags, no-heat winter calls, no-AC summer failures, and cracked heat exchanger diagnostics with a target 2-hour on-site response window across the GTA.
24/7 HVAC Emergency Service
Live 24/7 phone answering, not voicemail. Emergency dispatch for gas leaks, Enbridge Red Tags, no-heat, no-AC, cracked heat exchangers, and CO alarms with 2-hour on-site response and same-visit repair on most calls.
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HVAC Maintenance Plans
Annual maintenance subscription with priority scheduling, discounted repairs, biannual furnace and AC tune-ups, and 24/7 emergency response for premium tier. Basic, Standard, and Premium plans for Toronto homeowners.
Learn moreAir Quality
Indoor Air Quality & Ductwork
Whole-home indoor air quality systems and ductwork services for Toronto homes. HRV/ERV installation, MERV 11 to 16 filtration upgrades, steam humidifiers, UV-C germicidal light, duct cleaning, and dryer vent fire prevention.
Indoor Air Quality Systems
Heat Recovery Ventilator (HRV) and Energy Recovery Ventilator (ERV) installation, MERV 11 to 16 filtration upgrades, whole-home steam humidifiers, germicidal UV-C light integration, and smart thermostat commissioning.
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Ductwork & Duct Cleaning
Ductwork installation, aeroseal duct sealing, static pressure and CFM airflow balancing, dryer vent cleaning for fire prevention, and return-air correction for post-war Toronto bungalows with undersized returns.
Learn moreCommercial
Commercial HVAC Toronto
Commercial HVAC installation, service, and planned maintenance agreements for Toronto property managers, facility operators, and business owners. Rooftop unit (RTU) diagnostics and repair, restaurant makeup air servicing, RTU crane replacement, and quarterly and biannual preventative maintenance contracts across the GTA, all performed to ASHRAE 62.1 and TSSA B149.1 code.
View full commercial services overview
Commercial HVAC Overview
Full-lifecycle commercial HVAC across Toronto restaurants, retail, offices, condos, and light industrial facilities. Rooftop units, boilers, chillers, and variable air volume box commissioning with planned maintenance agreements for property managers.
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Commercial RTU Repair
Rapid rooftop unit diagnostic and repair for Carrier WeatherMaker, Trane Voyager, Lennox Landmark, and York Sunline RTUs. Compressor lockouts, ignition faults, tripped breakers, and economizer failures with 2-hour target response for property managers.
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Commercial HVAC PM Contracts
Custom quarterly and biannual preventative maintenance contracts for GTA property portfolios. Filter and belt swaps, coil washing, economizer tuning, refrigerant leak checks, and TSSA safety inspections to ASHRAE 62.1 with COI and WSIB on file.
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Restaurant Makeup Air (MAU)
Restaurant makeup air unit servicing, replacement, and 24/7 emergency dispatch for closed-restaurant scenarios. Kitchen exhaust interlock, TSSA B149.1 gas code, NFPA 96 fire code, and Toronto Public Health inspection readiness.
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RTU Crane Replacement
Turnkey rooftop unit crane replacement across the GTA. Mobile crane rigging, custom curb adaptors, municipal road closure permits, gas piping, electrical disconnect, and TSSA sign-off with single-day install for restaurants and retail.
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Why us
The contractor Toronto calls when the gas goes off
Best HVAC Toronto is a family-owned, full-service residential and commercial HVAC contractor with more than twenty years of combined crew experience in Ontario. Its technicians are TSSA G1/G2 certified, WSIB-covered, insured for $2 million, and background-checked, and the company is an HRAI member and authorized dealer for Lennox, Carrier, Trane, Bosch, Napoleon, and York.
What sets the Best HVAC crew apart is Enbridge Red Tag work. When the utility locks your meter, you need someone who can diagnose the fault, correct it, and sign the clearance on the same visit. That is our specialty, and it is why most of the red tags we attend have gas restored within 24 hours.
More about usEnbridge Red Tag specialists
Red tag compliance is what we are known for in Toronto. Type A and Type B tags, gas leak detection, cracked heat exchanger verification, venting corrections, and full re-certification, with most tags cleared and gas restored inside 24 hours.
TSSA G1/G2 certified, fully insured
Every technician holds a G1 or G2 gas licence, works under WSIB coverage, and is backed by $2 million in general liability insurance. We are an HRAI member and every technician is background-checked before they enter your home.
Whole HVAC lifecycle, one contractor
Furnaces, air conditioning, boilers, heat pumps, water heaters, gas lines, ductwork, air quality, and commercial systems. Residential and commercial work sits with the same crew, so nothing gets subcontracted out and forgotten.
Manufacturer-authorized dealer
Authorized for Lennox, Carrier, Trane, Bosch, Napoleon, and York. That means genuine parts, valid manufacturer warranties of 5 to 10 years, and warranty claims handled by us rather than left with you to chase.
Transparent, written pricing
Free on-site estimates for installations with no obligation, and a written quote before any work begins. The number you agree to is the number you pay, and financing is available on approved credit.
Manufacturer-backed installations
Every install is performed to the Ontario Building Code and TSSA gas code so your equipment manufacturer parts warranty stays valid. We register the equipment on your behalf and hand you the paperwork.
How it works
Four steps, no surprises
The same process whether it is a $150 diagnostic or a $15,000 heat pump installation.
- 1
Call us
Tell us what is happening. Emergencies are dispatched immediately, day or night, and non-urgent visits are booked into the first slot that suits you.
- 2
We diagnose
A TSSA-certified technician tests properly, with combustion analysis, pressure readings, and airflow measurement, then explains what they found in plain language.
- 3
You get a written quote
A fixed price in writing before any work begins, including rebate figures where they apply. Nothing proceeds until you have agreed to it.
- 4
We do the work
Installed, commissioned, and documented, with the site left clean and manufacturer parts coverage registered on your behalf.
Free tools
Not ready to call yet? Start here.
Get a sizing estimate or find the right service in a couple of minutes, no phone call required.
Not sure whether to repair or replace?
Book a diagnostic and get a straight answer, with the numbers to back it up. No pressure, no scare tactics.
Why it matters
How we compare to a typical heating and cooling contractor
Not every contractor diagnoses before they quote. Here is what that difference looks like in practice.
| Feature | Typical provider | Best HVAC Toronto |
|---|---|---|
| No-heat / gas emergency response | 1 to 3 days, or next available slot | 2 to 4 hours across the GTA, 24/7 for red tags |
| Before recommending a fix | Verbal estimate, replace first | Combustion analysis and load calculation before any quote |
| Quote format | Verbal estimate on site | Written fixed price before work starts |
| Warranty handling | Homeowner registers the equipment | Manufacturer registration filed by us |
| Rebate paperwork | Left to the homeowner | Checked and filed by us |
Reviews
What our customers say
4.9 out of 5 from 150+ customer reviews
Enbridge red-tagged our furnace on a Friday night and shut off the gas. Best HVAC Toronto had a technician out within two hours, found the cracked heat exchanger, and had us re-certified and heating again the next morning. Calm, clear, and no scare tactics.
Replaced our 18-year-old furnace with a high-efficiency unit and walked us through the Ontario rebates. Written quote up front, no hidden fees, and the crew left the mechanical room cleaner than they found it.
Our AC died during the July heat wave. They came out same day, diagnosed a refrigerant issue, and had us cool again fast. Honest about repair versus replace, and they didn't push us into a new system.
We had a cold-climate heat pump installed for our Markham home. They handled all the rebate paperwork and it's kept us warm through the winter. Very knowledgeable about the dual-fuel setup.
Needed a gas line run for our backyard BBQ and outdoor kitchen. TSSA-certified, permits handled, pressure test done properly. Fair price quoted by run length. Would use again.
Service coverage
Serving Toronto, Peel, York, Halton and Durham
Emergency red tag response reaches every corner of the Greater Toronto Area within two to four hours, from High Park, The Beaches, and Willowdale to Mississauga, Vaughan, and Oshawa. Searching for an HVAC technician near you? Typical emergency response is two hours, wherever you are in the GTA.
Main service areas
Also serving
Got questions?
Toronto HVAC questions, answered
The questions we hear most from Toronto and GTA homeowners.
How fast can you respond to an Enbridge red tag?
We respond across the GTA within two to four hours for red tag emergencies, and most tags are cleared with gas service restored within 24 hours. Our TSSA G1/G2 technicians handle inspection, repair, and full re-certification.
Are your technicians licensed and insured?
Yes. Every technician is TSSA-certified with G1 and G2 gas licenses, covered by WSIB, and backed by $2 million in general liability insurance. We're an HRAI member and all technicians are background-checked.
How much does furnace installation cost in Toronto?
Furnace installation runs $3,500 to $7,500 depending on the efficiency tier, with high-efficiency ENERGY STAR units eligible for Ontario rebates. Repair calls start from a $150 diagnostic, typically $250 to $500 for a service call.
What heat pump rebates are available in Ontario?
Cold-climate heat pump installs can qualify for rebates up to $6,500 through the federal Greener Homes program and Ontario's Save on Energy / Home Renovation Savings program. We handle the eligibility check and application paperwork.
Do you offer 24/7 emergency service?
Yes. We provide 24/7 emergency service for gas leaks, Enbridge red tags, no-heat, and no-AC situations. Typical emergency response is within two hours, with same-day service available for most repair calls Monday through Saturday.
Do you serve the whole GTA including Mississauga and Durham?
Yes. We serve Toronto and the entire Greater Toronto Area, including North York, Etobicoke, Scarborough, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, and the Durham region (Ajax, Pickering, Whitby, Oshawa). Emergency red tag response is available across the GTA within two to four hours.
What is the $5,000 rule for HVAC repair or replacement?
The $5,000 rule is a quick repair-versus-replace test: multiply the age of your furnace or air conditioner by the repair quote. If the result is over $5,000, replacement usually makes more sense. For example, a $400 repair on a 15-year-old furnace scores $6,000. Our technicians start with a $150 diagnostic and give you a written repair and replacement quote side by side.
How do I choose an HVAC company in Toronto?
Confirm the technicians hold a TSSA G1 or G2 gas licence, the company carries WSIB coverage and liability insurance, and every quote is written before work starts. HRAI membership and manufacturer-authorized dealer status are strong signals of quality. Best HVAC Toronto meets all of these, with $2 million in general liability insurance and authorized dealer status for Lennox, Carrier, Trane, Bosch, Napoleon, and York.
24/7 for gas emergencies, red tags, no-heat and no-AC
Need heat, cooling, or your gas turned back on?
TSSA-certified technicians, transparent written quotes, and manufacturer parts coverage registered on every installation.
- Manufacturer registration filed on your behalf
- Written quotes before work starts
- TSSA G1/G2 certified, WSIB covered