Heating & Cooling in Ottawa & Area

Serving Ottawa & Surrounding Areas

We repair, service and install furnaces, air conditioners, heat pumps, boilers and hot water tanks for homes and commercial buildings across Ottawa and the surrounding areas. TSSA registered, licensed & insured.

Call (613) 859-0229 Request a Quote

Open now · 24 hours, 7 days a week 5.0 on Google, 22 reviews

A row of wall-mounted boilers above a copper manifold with circulator pumps and gas piping in a plant room

TSSA registration #FSR-53336
CoverageLicensed & insured

TSSA registration #FSR-53336
CoverageLicensed & insured

Residential, Multiplex & Commercial

Our Services

Repair, service, replacement and installation of heating, cooling and hot water equipment for residential, Multiplex and commercial buildings.

Furnaces

Furnace repair, service, installation and replacement. We find the fault, then repair or replace the unit.
Call for: no heat, leaks, a furnace that keeps shutting off, loud noises, an old furnace
Get a quote
Air Conditioning

Repair, service, installation and replacement of central air conditioners.
Call for: warm air from the vents, frozen pipes, leaks, a unit that will not start, an old unit to replace
Get a quote
Heat Pumps

Ducted and ductless heat pump repair, service and installation, for heating and cooling from one system.
Call for: no heat, no cooling, leaks, a heat pump that stopped working, cooling a room without ducts, replacing an old A/C
Get a quote
Boilers & Radiant Heating

Boiler repair, service and installation for residential, Multiplex and commercial plant rooms, including combi boiler systems and in-floor radiant heating.
Call for: no heat or hot water, leaks, seized-up pumps or valves, pump or valve faults, a boiler replacement, a new boiler
Get a quote
Tankless Water Heaters & Hot Water Tanks

Tankless water heater and hot water tank repair, service, installation and replacement, including leaks and flood damage.
Call for: no hot water, leaks, a leaking tank, noises, a tank at the end of its life
Get a quote
Ventilation & Air Quality

Ventilation systems for better indoor air quality: ERV and HRV, HEPA and UV systems, humidifiers and dehumidifiers. Repair, service and installation for new and renovated residential, Multiplex and commercial buildings.
Call for: stale air, leaks, noises, a new or renovated building
Get a quote
Commercial Service & Maintenance

Service calls, repairs, replacements and plant-room work for Multiplex and commercial buildings, plus seasonal maintenance and service contracts.
Call for: a building without heat or cooling, a maintenance contract, a planned changeout
Get a quote

Open 24 hours

Emergency Service

We are open 24 hours a day, 7 days a week. Call for no heat, no cooling, no hot water, a water leak or a gas leak.

(613) 859-0229

Request a Quote

Smell gas? Leave the building first, then call Enbridge Gas at 1-866-763-5427 or 911.

Recent installations

Our Work

Recent boiler, in-floor heating, hot water, furnace, air quality and air conditioning jobs. Tap a photo to enlarge it.

Three white wall-hung combi boilers with venting and copper piping on a plywood wall — Combi boilers

A white ductless heat pump outdoor unit on a wooden deck beside a fence — Ductless heat pump outdoor unit

Two wall-hung boilers with insulated white piping, an Extrol expansion tank and buffer tanks in a commercial plant room — Commercial boiler plant room

Six wall-hung boilers in a row with yellow gas piping, venting and a copper header in a parking garage mechanical room — Six-boiler commercial plant

A wall-hung boiler with an expansion tank and copper piping in a stone basement — Boiler in a stone basement

A white wall-hung boiler beside a glycol in-floor heating manifold in a basement mechanical room — Boiler & glycol in-floor heating

A wall-hung boiler with copper piping, circulator pumps and in-floor heating manifolds on a plywood wall — Boiler, pumps & in-floor heating zones

A stainless in-floor heating manifold with ten labelled PEX loops, flow meters and zone actuators — In-floor heating manifold and loops

A new gas hot water tank with a blue flexible water line, vent pipe and copper piping — Gas hot water tank

A power-vent hot water tank installed in a closet with gas and water connections — Power-vent hot water tank

Two buffer tanks with insulated white piping and circulator pumps in a mechanical room — Buffer tanks & piping

A new stainless steel furnace heat exchanger with three return bends sitting on a basement floor — Furnace heat exchanger

Two high-efficiency furnaces with a whole-home humidifier and a media air cleaner on the ductwork — Furnaces with humidifier & air cleaner

A central air conditioner outdoor unit on a pad beside a house — Central air conditioner

Three ductless outdoor units stacked on wall brackets against a stone and steel-clad wall — Multiplex systems

A row of ductless outdoor units mounted on brackets along the side of a large building — Row of ductless outdoor units

Latest updates

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5.0 on Google

Reviews

22 Google reviews Read All Reviews on Google

“I can’t recommend this business enough. Our boiler went down, and they were able to come out on very short notice to get us back up and running. The owner is incredibly meticulous and clearly prioritizes quality over cutting corners.”
Matt Lortie · Google review · Boiler repair

“I had an outstanding experience with Alex. He serviced my A/C and brought my 2002 unit back to life like it was brand new. His professionalism, attention to detail, and customer-focused approach truly set him apart.”
Fitness fanatickfreeak · Google review · Air conditioning

“Excellent service from start to finish! Alex was professional, reliable, and very knowledgeable. He took the time to explain everything clearly, arrived on time, and completed the A/C system work efficiently.”
Alessandra Romanelli · Google review · Air conditioning

“Alex installed my A/C unit, replaced my hot water unit, and repaired my furnace.”
Bruce Binda · Google review · A/C, hot water and furnace

“Alex definitely know his stuff and super courteous. He not only fix the issue he also explained and help me to better take care of my ac system.”
Jack Chung · Google review · Mini split repair

TSSA registered

About Us

ThermalX Mechanical is an HVAC contractor serving Ottawa and the surrounding areas. We repair and install furnaces, air conditioners, heat pumps, boilers and hot water tanks for houses and commercial buildings, from a single furnace call to multi-boiler plant rooms.

Every job starts with an assessment. ThermalX Mechanical is owned by Alex, and we come to your property across Ottawa and the surrounding area, any hour of the day.

The owner of ThermalX Mechanical, arms crossed, in a ThermalX Mechanical shirt

Ottawa and area

Service Area

We travel to properties in Ottawa and every major community within about an hour of the city.

OttawaSurrounding townsAbout 1 hour drive

See the full list of places we serve

Ottawa neighbourhoods

Within about an hour

Get in touch

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Service call fee. Visits to inspect and quote carry a service call fee. If you hire us for the work, that fee comes off your final invoice.

Contact Us

(613) 859-0229

info@thermalx.ca
1535 Alta Vista Dr
Ottawa, ON K1G 3N9
Serving Ottawa and the surrounding area
Open 24 hours, 7 days a week

Heating & Cooling in Ottawa & Area

Our Services

Furnaces

Air Conditioning

Heat Pumps

Boilers & Radiant Heating

Tankless Water Heaters & Hot Water Tanks

Ventilation & Air Quality

Commercial Service & Maintenance