HVAC, Oshawa
Oshawa is Durham Region's largest city, and its housing stock spans almost a century of construction. A 1940s bungalow in McLaughlin, a 2015 detached home in Windfields, and a converted multi-unit near Simcoe Street each present a different set of heating and cooling challenges. Comfort Shop works across all of them. We install, repair, and maintain furnaces, air conditioners, heat pumps, boilers, tankless water heaters, and air filtration systems for Oshawa homeowners and landlords.
We are an authorized Lennox dealer and carry Continental, Navien, and Amaircare products. Our team has served Durham Region for over 35 years from our service centre in Janetville. We do not use high-pressure sales pitches. We assess your home, explain your options, quote a price, and let you decide.
A City Where Every Neighbourhood Has a Different HVAC Challenge
Oshawa's neighbourhoods were built in distinct waves, and each wave left behind a particular style of construction with particular HVAC implications.
The southern and central neighbourhoods, including McLaughlin, Central, Donevan, Lakeview, Eastdale, and Pinecrest, contain the city's oldest housing stock. Many of these homes were built between the 1930s and 1960s, during and after Oshawa's peak years as General Motors' Canadian manufacturing base. Bungalows, split-levels, and modest two-storey homes with original single-pane windows, minimal insulation, and gravity or forced-air furnaces are common. Some still run on oil heating or early-generation natural gas equipment.
The northern neighbourhoods, including Windfields, Kedron, Taunton, and Samac, are predominantly newer. Windfields grew rapidly after 2010 alongside the opening of the toll-free Highway 407 East extension. The Kedron Part II planning area north of Conlin Road is one of the largest active residential developments in Durham Region, with 10 developers collaborating on a buildout that could accommodate approximately 22,000 residents. Homes in these areas are energy-efficient by code but often feature builder-grade HVAC that is sized to minimums.
Understanding which category your home falls into is the starting point for any HVAC decision. A system that is right for a 1,200-square-foot McLaughlin bungalow with no basement insulation is wrong for a 2,500-square-foot Kedron home with triple-pane windows. Comfort Shop sizes every installation based on a detailed assessment of your specific home, not a general neighbourhood average.
Furnace Replacements and Retrofits in McLaughlin, Central, and Lakeview
McLaughlin, on Oshawa's western boundary, has housing from nearly every decade of the 1900s. The oldest homes near the Oshawa Golf and Curling Club include Tudor and Colonial styles from the 1910s and 1920s. The core of the neighbourhood is 1950s and 1960s bungalows along the streets south of Taunton Road and east of Thornton Road. A later subdivision off Thornton from the 1980s rounds out the mix.
Central Oshawa, anchored by King Street and Simcoe Street, contains some of the city's most architecturally diverse housing. The Parkwood Estate, the 55-room National Historic Site built for GM founder R.S. McLaughlin in 1917, sits on Simcoe Street North. Surrounding streets include smaller Victorian and Edwardian homes, many now subdivided into rental units.
Lakeview, south of King Street toward Lake Ontario, features post-war housing and access to Lakeview Park and the waterfront. Like McLaughlin and Central, many Lakeview homes are approaching or past the 25-year mark on their existing HVAC equipment.
For homeowners in these older neighbourhoods, the most common job is a furnace replacement. Many homes still run mid-efficiency furnaces (80% AFUE or lower) that waste 20 cents or more of every heating dollar. Replacing that unit with a high-efficiency Lennox furnace (95%+ AFUE) reduces gas consumption immediately. Where homes lack central air conditioning, we can add it during the furnace replacement or recommend a cold-climate heat pump that handles both heating and cooling from a single outdoor unit, eliminating the need for separate air conditioning hardware.
For homes where ductwork is in poor condition or was never properly designed, we evaluate whether duct repair, replacement, or a switch to a ductless system makes more sense. The goal is a system that distributes heat evenly through the entire home, including basements and upper floors that older gravity systems often neglect.
Builder-Grade Upgrades in Windfields, Kedron, and North Oshawa
North Oshawa's growth has been one of the region's defining stories over the past decade. The toll-free Highway 407 East extension gave communities north of Taunton Road direct highway access without commuting through city traffic. Windfields, centred around the former Windfields Farm lands near Durham College and Ontario Tech University, now features the RioCan Windfields Farm shopping complex (anchored by Costco and major retailers), Northern Dancer Public School, and dense residential subdivisions.
The Kedron planning area, east of Harmony Road and north of Conlin Road, continues to add single-detached homes and townhomes. The Heights of Harmony development at the intersection of Harmony Road North and Winchester Road East has been a significant contributor to this growth. Taunton, in the northeast corner bordering the Oak Ridges Moraine, offers some of Oshawa's most spacious homes, many built in the 2010s.
Homes in these neighbourhoods are typically three to ten years old. Their HVAC systems meet Ontario Building Code minimums, which means they work, but they are not optimized. Common issues include oversized air conditioners that cycle too quickly to dehumidify properly, single-speed furnace blowers that create hot and cold spots, and basic thermostats that lack scheduling or zoning capability.
Comfort Shop can assess whether your builder-installed system is performing to its potential. In many cases, the fix is not a full replacement but a targeted upgrade: a variable-speed blower motor, a smart thermostat, or a whole-home HEPA air filtration system from Amaircare. Where the original equipment is undersized or approaching end-of-life earlier than expected, we provide a full HVAC system evaluation and replacement plan tailored to your home.
Downtown Density and the Simcoe Street Corridor
Downtown Oshawa is densifying under the city's Plan20Thirty revitalization strategy. The $2.5 million Veterans Square at Bond Street and Simcoe Street North was completed in late 2025, with the "Kaleidoscope" sculpture by Nicholas Crombach installed in 2026 as Phase Two. Ontario Tech University has expanded its downtown campus presence, purchasing land at 154 Bruce Street for future academic facilities. The Regent Theatre at 50 King Street East, built in the early 1900s, now operates as both a university lecture theatre and community venue.
Multiple development applications along the Simcoe Street corridor propose mid-rise mixed-use buildings ranging from five to twelve storeys. These projects will bring hundreds of new residential units into the downtown core over the coming years.
For landlords and property owners in the downtown corridor, HVAC requirements differ from single-family residential. Multi-unit buildings need systems that serve individual units independently. High-efficiency boiler installations using Navien equipment can provide centralized hot water and hydronic heating for multi-unit properties at lower operating costs than individual furnaces in each unit. We work with property owners to design systems that balance tenant comfort with operating efficiency.
Choosing the Right System for Oshawa's Winter and Summer Extremes
Oshawa shares Durham Region's humid continental climate. January temperatures average -8°C to -3°C. July typically reaches 26°C or higher, with humidity amplified by proximity to Lake Ontario. That range puts continuous demand on heating and cooling systems across all four seasons.
Heating Options for Older and Newer Homes. For older homes with existing ductwork, a high-efficiency gas furnace remains the most practical primary heating source. Lennox furnaces at 96% AFUE or higher extract nearly all usable energy from natural gas, which keeps heating costs as low as possible while retaining the familiar forced-air delivery system.
For homeowners considering electrification, residential heat pump installation is increasingly viable. Modern cold-climate heat pumps operate efficiently at temperatures well below -15°C, providing heating and cooling from a single unit. In older homes without ductwork, a ductless mini-split heat pump can provide zone-by-zone comfort without the cost of running new ducts through finished walls.
For homes with radiators or radiant floor heating, a boiler replacement or tankless water heater upgrade from Navien reduces fuel consumption and eliminates the standby losses of conventional tank systems. We install both condensing boilers for hydronic heating and tankless units for domestic hot water.
Every installation starts with a Manual J load calculation specific to your home. We measure square footage, insulation values, window area, orientation, and air leakage to size the system correctly. An oversized furnace wastes gas. An undersized heat pump struggles on the coldest nights. Proper sizing eliminates both problems.
Scheduling Service and Getting a Quote in Oshawa
Call Comfort Shop at 905-623-2956 to schedule a home assessment. A licensed technician will visit your home, inspect your existing equipment, take measurements, and discuss what you need. We follow up with a written quote that includes equipment specifications, installation scope, timeline, and total cost.
Our technicians handle every installation directly. We do not subcontract. We carry full liability insurance and workers' compensation coverage and hold TSSA licensing. We accept cash, cheque, credit card, debit, email transfer, and EFT.
For existing equipment, we offer maintenance plans to keep your furnace, air conditioner, or heat pump running at peak efficiency. Routine maintenance catches small issues before they become expensive repairs and helps maintain your manufacturer warranty. If you need emergency service, call us directly at 905-623-2956 and we will prioritize restoring your home's heating or cooling.
Reaching Oshawa from Janetville
Our service centre at 627 Viewlake Road in Janetville is approximately 35 minutes north of Oshawa via Regional Road 57 to Highway 2, or via Highway 407 East. For service calls in north Oshawa (Windfields, Kedron, Taunton), our technicians typically access the area via the 407 to Harmony Road, which puts them directly into the north Oshawa subdivisions.
For calls in central and south Oshawa (McLaughlin, Central, Lakeview, Donevan), we route via Simcoe Street or Ritson Road from Highway 2.
We service all of Oshawa and its neighbouring communities. Homeowners in Whitby to the west, Courtice and Bowmanville to the east, and Janetville to the north are all within our regular service area.
Oshawa Homeowners' Most Common HVAC Questions
My McLaughlin home has a furnace from the early 2000s. Is it worth replacing now?
A furnace that is 20 or more years old is past its expected service life, even if it still runs. Efficiency degrades over time, and repair parts for older models become harder to source. Replacing it with a high-efficiency unit typically pays for itself in reduced gas bills within five to seven years, and you eliminate the risk of a mid-winter failure.
Do you work in the Windfields and Kedron subdivisions?
Yes. We service north Oshawa regularly and are familiar with the common builder-installed equipment in these newer communities. We can assess whether your current system is performing correctly or recommend targeted upgrades.
Can a heat pump replace my furnace and air conditioner in Oshawa?
In most cases, yes. Cold-climate heat pumps from Lennox are rated for temperatures well below what Oshawa typically experiences in winter. For homes with existing ductwork, a ducted heat pump replaces both your furnace and AC unit. For homes without ducts, a ductless system provides zone-by-zone control.
I own a rental property near Simcoe Street. What HVAC system do you recommend?
Rental properties benefit from durable, low-maintenance equipment with strong warranty coverage. A high-efficiency furnace paired with a programmable thermostat gives tenants comfort control while protecting your operating costs. For multi-unit conversions, we can design a system with independent zone control for each unit.
How does the Parkwood Estate area affect HVAC installation?
The Parkwood Estate itself is a National Historic Site, but surrounding residential streets contain conventional housing. Heritage designation does not apply to neighbouring properties unless they are individually designated. We install standard HVAC equipment in this area without restrictions.
What is a Manual J load calculation?
It is a standardized method for calculating how much heating and cooling capacity a specific home requires. We measure your home's dimensions, insulation, window area, and air leakage to determine the correct equipment size. This prevents the oversizing and undersizing problems that lead to high energy bills and poor comfort.
Do you service homes near the Durham College and Ontario Tech campus?
Yes. The Samac and Windfields neighbourhoods adjacent to the campus are part of our regular service area. We work with both homeowners and landlords in these communities.
What brands of furnace do you install?
We carry Lennox and Continental furnaces across a range of efficiency ratings and price points. Both brands are manufactured for Canadian conditions and backed by strong warranty programs. We recommend the specific model that matches your home's requirements after completing our assessment.
Is there a cost difference between replacing a furnace in an older home versus a newer one?
Installation complexity affects cost. Older homes may need ductwork modifications, gas line upgrades, or electrical panel updates that newer homes do not. We identify all requirements during the assessment and include them in your quote so there are no surprises.
Can you install air conditioning in a home that has never had it?
Yes. If your home has existing ductwork from a forced-air furnace, adding central air conditioning is a straightforward installation. If there is no ductwork, a ductless mini-split system provides cooling (and heating) without the cost of running new ducts. We will recommend the best approach for your home's layout.
Ready to Upgrade Your Oshawa Home's Comfort System
Call Comfort Shop at 905-623-2956 to schedule your home assessment. We will inspect your existing equipment, measure your home, explain your options, and provide a fixed written quote. No pressure. No obligation. Whether you are replacing a 25-year-old furnace in McLaughlin, upgrading builder-grade equipment in Kedron, or outfitting a multi-unit property downtown, we will find the right system for your home and your budget.