5.0 Google · 5.0 HomeStars
Serving Toronto & the GTA Since 1999
24/7 Emergency Service
Enbridge Sustain Trusted Partner
Licensed & Insured · TSSA Certified
5.0 Google · 5.0 HomeStars
Serving Toronto & the GTA Since 1999
24/7 Emergency Service
Enbridge Sustain Trusted Partner
Licensed & Insured · TSSA Certified
Call NowGet a Quote
HVAC service in Oshawa
Serving Oshawa & Surrounding Areas

HVAC Services in Oshawa

Expert heating, cooling & air quality services for Oshawa homeowners. Family-owned since 1999. 24/7 emergency service.

Megacity HVACEnbridge Sustain Trusted Partner
5.0 Google & HomeStars
Licensed & Insured
24/7 Emergency Service
TSSA Certified Technicians
Customer Reviews
5.0 / 5.0 · 104+ Google reviews
Enbridge Sustain Trusted PartnerAuthorized Enbridge Sustain Trusted Partner — $0-Down Financing on a New System
Oshawa HVAC Experts

Trusted HVAC Service in Oshawa, Since 1999

Oshawa homeowners count on Megacity HVAC for affordable, professional heating and cooling service. From Taunton to Lakeview, Northwood to the university district — our certified technicians deliver quality HVAC installations, repairs, and maintenance across all Oshawa communities. We bring 25+ years of GTA experience to every job. Oshawa offers some of the most affordable housing in the eastern GTA, attracting families and first-time buyers to both established neighbourhoods near the downtown core and newer developments in the north end. Many of these homes — whether vintage workers' cottages near Oshawa Centre or 1970s bungalows in Northwood — benefit from HVAC upgrades that improve comfort and dramatically reduce energy bills.

Oshawa's housing reflects its blue-collar automotive heritage, with a core of 1920s–1950s workers' cottages and wartime bungalows near the downtown and GM plant area. These compact homes often have outdated ductwork, converted gravity furnaces, and minimal insulation — similar to East York but generally in smaller footprints. North Oshawa has seen significant new development with Windfields and Kedron subdivisions featuring modern homes, many of which have builder-installed systems that are reaching the 15-year replacement threshold. Oshawa's more affordable price point also means many homeowners are budget-conscious, making energy-efficient equipment with rebate savings particularly appealing.

Oshawa sits at the eastern edge of the GTA where lake-effect weather patterns can produce heavier snowfall and colder temperatures than Toronto proper. Winter nights regularly dip below -20°C, and Oshawa's older homes with poor insulation and aging furnaces feel the cold acutely. A pre-winter furnace tune-up and inspection is especially important for Oshawa homeowners with equipment over 15 years old.

Services we offer in Oshawa

Furnace installation & repair
Air conditioning installation & repair
Heat pump installation (cold-climate)
Water heater replacement
Ductless mini-split systems
Indoor air quality & HRV
Annual HVAC maintenance plans
Emergency service 24/7

24/7 Emergency

Real answer, day or night — no extra fees for evenings or weekends.

Upfront Pricing

A fixed price before any work starts. You approve it first.

TSSA Certified

Licensed, insured, background-checked techs and full warranty support.

5.0★ · 250+ Reviews

Top-rated on Google and HomeStars, serving the GTA since 1999.

Equipment We Install

The HVAC Equipment We Install in Oshawa

A furnace, air conditioner, heat pump, and water heater from the lineup we install across the GTA — full manufacturer specs on each.

Lennox ML196E Merit Series 96% AFUE gas furnace

Lennox

ENERGY STAR

Lennox ML196E

Merit® Series · Single-stage · 96% AFUE · ENERGY STAR®

up to 96%AFUE

Efficiency

Up to 96% AFUE

Heating

Single-stage

Blower

Constant-torque

Heat exchanger

20-yr warranty

Full details
Lennox ML14KC1 Merit Series central air conditioner

Lennox

ENERGY STAR

Lennox ML14KC1

Merit® Series · Single-stage · ENERGY STAR®

14.3+SEER2

Efficiency

14.3+ SEER2

Cooling

Single-stage

Sound

As low as 73 dB

Refrigerant

R-454B

Full details
Mitsubishi Electric FX-Series Hyper-Heat ductless heat pump

Mitsubishi Electric

ENERGY STAR

Mitsubishi FX (Hyper-Heat)

M-Series FX · Ductless · Hyper-Heat · ENERGY STAR®

29.9SEER2

Cooling

29.9 SEER2

Heating

12.4 HSPF2

Cold-climate

Heats to -30°C

Type

Ductless inverter

Full details
Bradford White atmospheric-vent gas water heater

Bradford White

Bradford White RG2 (Atmospheric)

Atmospheric gas · Defender Safety System®

50Gallons

Type

Atmospheric gas

Capacity

50 gal (189 L)

First-hour

81 gal

Warranty

6-yr (10-yr avail.)

Full details

All specifications are published by the manufacturer. We install and service these systems across Toronto & the GTA.

Enbridge Sustain Trusted PartnerAuthorized Enbridge Sustain Trusted Partner — $0-Down Financing on a New System
Our Process

What to Expect From a Megacity HVAC Visit

1

Call or Book Online

Describe the issue. We dispatch a technician with common parts already on board.

2

Full Diagnostic

We test refrigerant pressure, electrical connections, heat exchangers, and airflow — finding the root cause, not just the symptom.

3

Upfront Quote

A clear explanation and a fixed price. You approve before any work starts.

4

Repair or Install & Verify

We fix or install, run a complete system cycle, confirm temperatures, and clean up before leaving.

Diagnostics

Common HVAC Issues in Oshawa

Most are resolved same-day with parts we carry on our trucks.

Furnace Not Heating

Faulty ignitor, tripped limit switch, failed inducer motor, or cracked heat exchanger — common winter calls we resolve same day.

AC Not Cooling

Low refrigerant, dirty condenser coils, or a failing compressor. We carry refrigerant and the most common parts on every truck.

Short Cycling

The system turns on and off without completing a cycle — usually a clogged filter, low refrigerant, or an oversized unit.

Unusual Noises

Grinding, squealing, or rattling from any HVAC unit. Often a failing blower motor, loose hardware, or compressor wear.

Water Leaks

Clogged condensate drains, frozen evaporator coils, or a cracked secondary heat exchanger. High humidity makes drain clogs frequent.

Uneven Heating or Cooling

Hot rooms upstairs, cold rooms in the basement — often caused by ductwork imbalance, blower issues, or an undersized system.

Brands We Install

We Install & Service Every Major Brand

Authorized Lennox Dealer — and fully equipped to install, repair, and maintain every major HVAC brand sold in Ontario.

Lennox HVAC
Carrier HVAC
Trane HVAC
Daikin HVAC
Rheem HVAC
Mitsubishi Electric HVAC
KeepRite HVAC
York HVAC
Navien HVAC
Ducane HVAC
Kepler HVAC
Enbridge Sustain Trusted Partner
$0
Down
Trusted Partner

Lease-to-Own Through Enbridge Sustain

As a certified Enbridge Sustain Trusted Partner, we offer Oshawa homeowners a new furnace, AC, heat pump, or water heater with nothing down. Standard ACs and furnaces are not covered by current rebate programs, but the Sustain lease-to-own program keeps the upfront cost at $0.

  • No upfront cost — $0 down on approved credit
  • Maintenance and repairs included for the term
  • Predictable, manageable monthly payments
See Financing Options
Enbridge Sustain Trusted PartnerAuthorized Enbridge Sustain Trusted Partner — $0-Down Financing on a New System
Get In Touch

Get a Free HVAC Estimate in Oshawa

Tell us what your system is doing and we will get back to you fast. Same-day service available across Oshawa and the GTA — or call and talk to a real person now.

Call 24/7(416) 286-5665
Rated5.0★ on Google & HomeStars

Free estimates · No obligation · We respect your privacy

Also Serving Nearby Communities

Visit Us

Our Location

Proudly serving Toronto & the Greater Toronto Area from our East York office since 1999.

Megacity HVAC

Address
885 O'Connor Dr, East York, ON M4B 2S7
Hours
Mon – Sun: 7:00 AM – 11:00 PM
24/7 Emergency Service Available