Cassar Heating & Air Conditioning
56 Google reviews
Ductless Mini Splits in Oshawa
5 photos published on this company’s Google Business Profile, collected August 2026. We did not take them and cannot confirm they show this company’s own work.
Heat pump work confirmed on their website
Registered for Ontario’s Home Renovation Savings heat pump rebate
Last updated: By HeatPumpIndex Evidence Desk
About Cassar Heating & Air Conditioning
HeatPumpIndex lists Cassar Heating & Air Conditioning as a ductless mini split installer serving Oshawa, rated 5.0★ across 56 Google reviews.
Professional HVAC services across Durham Region. Furnace installation, air conditioning, heat pumps, hot water tanks and more. Call David at (416) 508-4585.
Service options
- Online estimates
- Onsite services
Offerings
- Installation service
- Repair services
The HeatPumpIndex score, line by line
83out of 100
- Reviews and reputation41 of 45
- Google rating, adjusted for how many reviews stand behind it (4.97 of 5)+29
- How many Google reviews there are (56)+11
- What it states on its own website19 of 30
- Says it is on a named regulator's books (TSSA, or ECRA/ESA)+12
- Says it is insured, bonded, or carries WSIB coverage+4
- Says it has been in the trade about 15 years+3
- Website and record23 of 25
- The website answered when we fetched it+8
- On Ontario's Home Renovation Savings contractor register+8
- Its own website mentions heat pump work+4
- Posts its opening hours+2
- Has three or more photos+1
Reviews and reputation counts for 45 of the 100, what the company states on its own website for 30, and its website and record for 25. Nothing in this panel has been checked by anyone here: the middle pillar is the company writing about itself and a crawler reading the sentence. How the score is built.
What this site read
Statements on Cassar Heating & Air Conditioning’s own website
- Says it has been going since 2011
- Says it is registered with the TSSA
- Says it holds a trade licence
- Says it is insured
Each line above is a sentence a crawler found on that company’s website when the site was read on 2026-08-30. Nobody here rang a regulator or looked at a certificate, which is why every line begins “Says it”.
What reviewers kept coming back to
- Heat pump install
- “David installed a ductless mini-split heatpump unit in my home”
- Ductless mini split
- “David installed a ductless mini-split heatpump unit in my home”
- Water heater or tankless
- “came to replace my natural gas hot water tank”
- Furnace install
- “to eventually replacing the furnace, the approach was top notch. Dave”
- Used them for years
- “We have worked with him multiple times over the years”
- Tidy worksite
- “arrived on time, and left the work area spotless”
Themes come only from the Google reviews already stored against this listing, and each one carries the reviewer’s own sentence. A listing with fewer than three stored reviews gets none at all.
Ontario rebate programme
Cassar Heating & Air Conditioning appears on Ontario’s Home Renovation Savings contractor directory as registered to install heat pumps under the programme, listed there as Cassar Heating And Air Conditioning. Homeowners generally need a registered contractor to claim the rebate.
Heat pump types on the register: Centrally Ducted ccASHPs, Ductless ccASHPs.
Being on this list is not a recommendation. The programme states that Enbridge Gas and the IESO do not endorse any of the contractors on it. Read from the official contractor directory on 2026-08-03. Confirm current status with the programme before you sign anything.
Services
- Ductless Mini Splits
- Air Conditioning
- Heat Pump Installation
- Furnaces
- Air Conditioners
- Heat Pumps
- Ductless Heat Pumps
- Hot Water Tanks
- Tankless Water Heaters
- Fireplaces
What customers say
“David installed a ductless mini-split heatpump unit in my home. He was an absolute pleasure to work with, providing fast, friendly, and professional service. I highly recommend him for any of your HVAC needs!”
Kesikvia Google reviews3 months ago
“I live in Whitby and David quickly answered the call and came to replace my natural gas hot water tank. His service was excellent both in the removal of the old tank, installation of the new one and showing me…”
Gregvia Google reviews3 months ago
“David came to Lindsay in the city of Kawartha Lakes, To do numerous jobs for us. Air conditioning first almost 10 years ago in our new home then he came back and did a gas line for a gas barbeque…”
rachelvia Google reviews4 months ago
“Great experience with David and team. From his patience in diagnosing the issue (thoughtful and thorough) to eventually replacing the furnace, the approach was top notch. Dave and Alex made the install as painless and seamless as possible. Highly recommended…”
Johnvia Google reviews5 months ago
“David Cassar is professional and hard working. We have worked with him multiple times over the years. He did the new install of the furnace at the old house before we moved, relocated the AC unit and this week he…”
Danvia Google reviews6 years ago
Hours
Open 24 hours, every day
Before you book, read the questions to ask ductless mini split installers.
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Cassar Heating & Air Conditioning: frequently asked questions
Is Cassar Heating & Air Conditioning well reviewed?
- Cassar Heating & Air Conditioning holds a 5.0-star Google rating across 56 reviews. That is a strong score for a ductless mini split installer in the Greater Toronto Area.
Where does Cassar Heating & Air Conditioning operate?
- Cassar Heating & Air Conditioning works out of Oshawa in the Durham area and serves surrounding Greater Toronto Area neighbourhoods. Its listed address is Oshawa, ON L1G 6C3.
How do I get a quote from Cassar Heating & Air Conditioning?
- You can contact Cassar Heating & Air Conditioning directly or through its website.
What does Cassar Heating & Air Conditioning charge for ductless mini split installation?
- Cassar Heating & Air Conditioning sets its own prices, but as a market benchmark single zone ductless mini split, standard model runs $3,000 to $4,500 per project (CAD) across the GTA, according to Megacity HVAC (Toronto, 2026). Add 13% HST, and request an itemized quote for numbers specific to your project.