Delta Air Systems has been in the business of improving the quality of the environment in homes and businesses since the 1950’s. Our approach has always been to listen first –fully understanding your needs makes it simple to develop practical and cost effective furnace or air conditioning solutions. We service what we sell and sell only what we service.

Concerned about your Indoor Air Quality?

Please check out our IAQ pages & If you're looking to improve your home's air quality, call us & speak to one of our indoor air quality specialists. We are here to help! (519) 885-2740

Save Up to $7,100 on Qualfying Heat Pumps

Enbridge Gas has teamed up with the Canadian government and their Canada Greener Homes Grant to co-deliver the Home Efficiency Rebate Plus (HER+) program. Through this program, eligible Canadians and Enbridge customers can qualify for up to $7,100 back on eligible ENERGY STAR® certified heat pumps.

Contact Delta Air Systems

  • Max. file size: 128 MB.
  • This field is for validation purposes and should be left unchanged.

Recent Blogs

Daikin Mini-Split Heat Pump Troubleshooting Guide

Heat pumps have become increasingly popular due to their energy efficiency and reliability. These...

Here’s How Heat Pumps Work

How Heat Pumps Work Heat pump technology is not new. It’s been around for a long time. These...

chase paymentech hvac financing

Top Products

Lennox SLP98V Variable-Capacity Gas Furnace
The quietest high-efficiency furnace you can buy!
furnaces

Lennox XC20

High-efficiency air conditioner with true variable capacity.
furnaces

Lennox S30 Control

Ease of Use. Consistent Comfort. Classic Design.

Daikin FIT

Smart HVAC system that won’t compromise on comfort.
furnaces

Testimonials & Reviews

Serving Waterloo, Kitchener, Guelph, Cambridge & Surrounding area.

Delta Air Systems Ltd.
4.8
Based on 382 reviews
A C.
21:46 22 Feb 24
Amazing service! Knowledgeable staff & great customer service! Had a maintenance check for HVAC system recently; had a minor service call a couple of years ago for an overflowing a/c drain pipe due to extended hot days; had an installation to replace our old combi heating/cooling unit 4 years ago. Everyone there is always professional, helpful, polite & provides great advice. Technicians show up on time, respectful, answer questions & give valuable recommendations. Thank you for everyone's great work!
Don V.
18:41 06 Feb 24
Young man was here to do an inspection on my furnace and air conditioner.He did an excellent job and I would be pleased to have him come back at anytime to do any work that is required!
DM W
18:33 14 Jan 24
Just like babies aren’t born during the day, when it’s convenient, our furnace waited until it was -11C to give out … and on a Sunday.  Nothing like a worried senior couple.I called the emergency line and Megan listened to me babble and was able to come within a ridiculously short period of time.This is a very experienced HVAC tech – she diagnosed the problem, swapped in a part and had the thing fixed in 10 minutes.  And used the spare time to inspect our coils.This is our second service call.  Braeden came to fix our first issue and he too was professional and competent (and polite).This is the best service experience we’ve had.  Having just moved here from Toronto we now depend on Delta Air Systems for our HVAC support. We highly recommend them.
Rebecca L.
18:09 31 Dec 23
We received fantastic service from the young lady who fixed our furnace. She was knowledgeable and professional, explained the issue to us and was luckily able to resolve the problem on the spot. She gave us some tips to extend the life of our furnace and the price for the service was very reasonable. We did not feel like there was any intent to upsell and believe the technician was working in our best interest to keep our 23 year old unit running as it is in good condition. I would highly recommend Delta as I felt the service provided was top notch.
Neil T.
17:04 03 Dec 23
I waited to review to see difference in utilities over past year. They installed 3 heat pumps in 110 year old house which was complicated due to renovations - getting heat/AC to each room. Jason; Scott; Tyler; Jordan; Zack were extremely helpful in placement of units for most efficient service installation in most unobtrusive place outside conduit and inside units. We have whole house AC now and radiators are augmented by heat pumps so more comfortable heat in an old house. Gas and hydro bills all reduced. As well, admin staff were very helpful. Excellent work and follow-up!! Thank you
Haneen F.
15:38 15 Nov 23
Tanya was pleasant to work with. She is knowledgeable and gave us exactly what we needed. Megan H, the technician, was very professional and quick. Overall they are honest company and we trusted them to do the work.
Taylor
02:49 11 Nov 23
This company is great. Amazing quick service. Super polite and helpful knowledgeable staff. Prices are fair and transparent. On time service. Can’t say enough good things. When stressed cuz you can’t heat your home this service felt like a lifeline!
Kezhen G.
04:10 25 Sep 23
My Lennox AC failed over the summer. Called around, decided to have Delta perform the service. Very friendly on the phone, I described the issue I was having. The technician was dispatched with the part available on the first visit. This saved time and money. Definitely calling them again for my future needs.
J & J plumbing & Custom C.
16:00 08 Aug 23
We had the blower motor go for our ac/furnace on a Sunday morning. Braedon was awesome! Friendly professional and knew his trade. Had the motor out and new one I'm within an hour. Would highly recommend. Thanks again Braedon
Stepan N.
00:31 02 Aug 23
We inherited the HVAC system from a previous homeowner. One day, the A/C unit stopped working, and we made the mistake of calling the A*** O** company (the edits are mine). The company ran a diagnostic and told us that the motor, which pumps air, had failed and needed replacement. They quoted us $1600 for the replacement and also suggested that we might want to consider replacing the whole unit with one that would be covered by warranty. We spoke with their salesperson who tried hard to upsell us on a new air pump system, costing around $12k.Our second call was to Delta. The salesperson, Tanya, was very knowledgeable and explained that we didn't need any replacement as the unit was relatively new and was most likely still under warranty. They were able to verify this the next day and sent us a technician to replace the motor for free, charging us only for the labor.Amazing job, and thank you for keeping the customer's interests a priority!
Dan G.
00:39 01 Aug 23
From the initial call, a technician was at my house in a couple of hours; by the 3rd working day I had a new AC & furnace installed.
Robert S.
12:30 31 Jul 23
I found myself in need of A/C work and spoke with Tanya. She explained all options and always answered in a timely matter. I would highly recommend you to ask for her as she did a terrific job. Thanks Delta team for a great job!
MORGAN M.
12:46 24 Jul 23
Delta is our go to spot anytime we have issues with our AC or furnace. Our AC decided to break on us in the middle of a heat wave. The lady I spoke to on the phone with was very helpful and reassuring. The technician came out (I think his name was Liam?) and went above and beyond for us! He was friendly, professional and cleaned up really good after himself. Even our dog (who doesn’t care for people) absolutely loved him- so brownie points for that! Thank you Delta Air Systems Ltd!
Daniel M.
15:44 15 Jul 23
Great service from start to finish. Very responsive, quick to schedule work and answered all my questions. The installation was done beautifully and everything is working great. Would highly recommend!
Mark C.
13:45 09 Jul 23
We recently had an install of a tankless water heater, furnace, and heat pump from Delta. From a sales perspective, Jay was extremely responsive to all of our inquiries prior to purchasing. He is very kind, respectful, and knowledgeable. Having a background and experience in the trade certainly helped. Jay was able to thoroughly answer all of our questions and address our concerns. He provided us with comparisons of the units we were considering, his professional opinion, and a variety of options for us to consider. He educated us in the benefits of a heat pump. We were impressed that he was able to accommodate all of our last minute requests as well during and after install.During the install, Scott and Matt were timely, efficient, clean, and quiet. They were respectful of our home by using mats to walk on and always left things clean and tidy before leaving each day. They allowed for questioning throughout and provided detailed information regarding operating the equipment upon completion of the project.We would highly recommend Delta and had a pleasant experience working with each of the team members.Thank you 🙏
Rick D.
18:00 03 Jul 23
Being a established Contractor, I really appreciated Delta with there professional services snd honesty.
Sumudu L.
20:06 02 Jul 23
Used Delta to replace my old Aircon and installed my Nest Thermostat as well. Friendly, Professional and Neat service. Super chuffed with my new system.
Toronto Living T.
19:42 02 Jul 23
Delta has done an excellent job to install a brand new Daiken HVAC with new ducts. From sales to installation, the service has been outstanding. Team leader Steve was very professional and caring, as if he were installing it at his own house. I highly recommend Delta.
Andy B.
14:42 28 Jun 23
Due to some work completed by another service provider (sub-contracted), we were in a real pickle when we turned on the AC for the first time this year and it wasn't working. The "other guy" recommended full replacement of a 6 year old system. Delta diagnosed and determined parts were under warranty and replaced them in a timely fashion. From the first call with Annie, to our Technician Megan and communication with Jordan (apologies, the fellow who helped with the thermostat was great too), EVERYONE was super professional, helpful and went the extra mile(s) to make a really crumby situation less crumby. Our final bill was 1/3 of what we were told we were looking at for a full replacement. Thank you Delta Air!
Karl N.
18:22 23 Jun 23
I waned to take this opportunity to tell you how we enjoyed the experience of dealing with your company. Specifically, I want to give a shout out to Tanya our salesperson and to Scott our installer. 5 Stars! Highly recommend!
Tom C.
12:12 15 Jun 23
This is the most fantastic company you will find. I had a new furnace and heat pump installed. Jason 1 was amazing in describing the benefits of the system I bought and Jason 2 did an amazing install job with his crew correcting the wiring errors of the previous company. Jordan personally came out along with Zack and provided me with all the information I needed re: the new Ecobee thermostat. This is the best company you will find!!!!
Scott & Penny Couture & D.
15:51 29 Mar 23
We purchased our high efficiency Lennox furnace and A/C system from Delta Air Systems in 2014 and have been happy with its operation since, except for the flow through humidifier that was installed at the time. We hadn't used the humidifier up until now as it seemed to be wasting a lot of water. When I mentioned this to Jordan at the Delta booth at the local home show, she arranged for a technician to come and look at it free of charge the next business day. After checking the system and replacing a clogged and upside down humidifier pad, the humidifier began to work but still seemed to waste a lot of water. He recommended that we install a water saver switch that would help reduce the amount of water wasted. The next day the technician showed up with a water saver, installed and set it, and verified that it was working. And to my very pleasant surprise, he told me that the cost for all this work, including the parts, was being covered by Delta Air Systems since it had been such a long time that we'd been unable to use it. Thank you Jordan and team for your EXCELLENT customer service.
lynne K.
15:20 19 Feb 23
Prompt professional service. They are the only hvac company I trust, that’s hard to find. I have been with them off and on for many years.
Annette B.
03:33 02 Feb 23
Best service experienced and courteous
Marg H.
17:39 17 Jan 23
Waterloo Delta Air Systems is a Top Notch Company! From my first phone call to the completion of our Greener Homes Grant Refund.I called to have our furnace inspected before the winter and was given an appointment immediately. I was very pleasantly surprised when the technician who arrived was a woman!!!! She did a very thorough inspection and discovered that there were cracks in our heat exchange. We would need a new furnace! She gave us the choice of when was most convenient to have her shut down the furnace so we would not be cold.We called Delta and and immediately got an appointment with the sales rep Jason Adlys and he was amazing. He narrowed down the best choices for our furnace and air conditioner. He told us about rebates available. He helped solved problems related to installing new equipment in an old home. Three fellows worked on our house and completed the entire Installation in one day! They also ran into some problems with new equipment/ old house but were able to problem solve and install everything perfectly. All follow up and questions were dealt with promptly and efficiently. In order to apply for the Greener Homes Grant, we given all the documentation and guidance needed.We are very impressed with Delta Waterloo Heating and Air Conditioning Company.John and Margaret Hunking Jan 2023
Andrew H.
03:48 12 Jan 23
Our furnace croaked on a cold Saturday in January. I called Delta Air Systems and Zack the technician was at our house in an hour. He quickly diagnosed the problem (motor was fried) and offered to have a new motor installed later that evening. The furnace was 12 years old so he mentioned said we could consider a new furnace as well. We knew it was older and had suspected that the previous homeowners hadn't maintained it as well as they could have so we opted for a full replacement. The next morning at 9 am, Jay was there taking photos and measurements. He fully explained the process and eased all of our concerns. He quoted a great price and offered to lend us space heaters until the new furnace was installed. By 9am the following morning, Julian and Jacob were there installing the new furnace and removing the old one. The entire process was smooth and effortless. All of the Delta guys were extremely knowledgeable, polite and careful in our house. The work was quick and executed with great precision. The house was spotless after the work was done. The furnace is quiet and works perfectly. We are completely satisfied. Delta Air Systems is the best in the business! We will enlist their services for all of our heating and cooling needs moving forward. I highly recommend them.
Jeff Dillon Fine A.
21:43 09 Jan 23
I wholeheartedly recommend Delta for all of your furnace needs. Their customer service is top-notch, with every employee being courteous and helpful. I had the pleasure of working with Courtney in customer service, who was incredibly informative and promptly transferred me to Jordan, the service manager. They swiftly identified the best course of action to take. The technician, Zach, they sent was highly skilled and quickly resolved the issue. Delta not only saved me time and money, but they have earned my loyalty as a customer for any future needs.
Abraham T.
16:01 16 Dec 22
Wish I could give six stars. I couldnt get the guys who installed my unit to call me back. Luckily, the manufacturer (Applied Comfort) recommended Delta Air Systems who dispatched a technician within a day. Big credit to ZACH for being super knowledgeable, helpful and friendly. If management is reading this please recognize ZACH as an excellent technician. Also, pricing was reasonable!
Automotive D.
18:45 30 Nov 22
Bought last two furnaces and AC units from Delta Air Systems. Calvin was very professional and knowledgeable. He was very helpful with minor repairs to the heating system (ie. reset breakers etc.) that I have had for the past 10 years. Also, purchased a new heating and air conditioning system for my personal residence. Would recommend Delta Air Systems to anyone looking for a good company who preform quality work.
Paul G.
23:24 27 Nov 22
We have used Delta on two occasions. Each time their work has been exceptional. This time Delta did a complete retrofit (heating/AC/duct work). The guys were professional and worked so hard. We are very happy with the work completed. We would absolutely recommend Delta.
Christine T.
19:11 16 Nov 22
Delta was recommended to me by a friend when my heating system quit. After contacting them Jason came out, looked at my system and made some recommendations for a system that was a heat pump and backup gas furnace.Needless to say it was a bit of a scary experience when I saw the initial price but Jason walked me through the process to get a grant to cover a nice part of it. I did have some doubts and I expressed them to Delta. They understood and wanted me to be 100% sure. I did some research and felt comfortable about the choice.The install crew was Julian and Brad and I cannot say enough good things about them. They had to do a two day install (lots of work considering my old furnace was oversized and stuck in a small area) and were here on time each day. They didn't mind me checking things out and asking questions. When they left the first day they asked if they could leave some stuff in the garage which I appreciated, they didn't just assume it would be acceptable. The next day when they finished you would not know I had work done as every shred of packing materials, old duct work, etc was gone. Very professional.I look forward to dealing with Delta for all my maintenance etc for the new system.
Chris B.
15:17 15 Nov 22
We had our furnace break, but fortunately Delta was quick to respond with a quote and package that fit our needs. The installers, Steve & Brad, were professional, polite and cleaned everything up perfectly. They spent the time to walk through the new furnace and thermostat as well. Great job !!
Rosa B.
20:26 11 Nov 22
I called Delta when my mother's furnace stopped working. They sent someone over the same day who was extremely thorough in doing the diagnostics and gave a detail explanation of what the issues were. They offered a couple of solutions and were very honest in their feedback and pricing. In addition, they offered to lend my mother a couple of heaters until the furnace could be repaired. It was a pleasure dealing with everyone at Delta. It has happened that other companies tried to take advantage of my elderly mother. This was definitely NOT something that I was worried about with Delta. I found them to be one of the most pleasant and honest companies I have ever dealt with. I would, with 100% confidence, recommend them to anyone.
Don
22:27 04 Nov 22
Delta air systems
Jill D.
17:35 29 Oct 22
Delta is a professional business right from the initial quote to the completed installation. The installers, Matt and Brad, did an exceptional job installing the furnace and there was no mess to clean up when they were done!
Julie W.
12:39 28 Oct 22
Very knowledgeable and polite.,
Tim C.
22:26 24 Oct 22
Where do I start? Let's begin with Annie and Courtney in the office. Pleasant, polite and completely professional. Excellent people to have as first line of contact. Now, let's move to Zach. He's been doing this for almost 9 years and let me tell you, the man was fantastic. He was polite. He was personable. He was well spojen and he looked you in the eye when he talked to you. Talk about inspiring confidence! He was thorough and explained what needed to be done during the initial visit. When he came back to do the job, you would hardly know he was in the house. I mean, he replaced everything on the furnace and took the time to set things up correctly. We also have this air exchanger that I have never been able to figure out and he's the first person who was able to explain it to me. I have never felt more confident in my home's heating system then I do after the work that Zach did. You've probably heard this before but whatever Delta is paying Zach, it's not enough. This young man is the type of person that any employer would be happy to have representing them to customers.
karim W.
11:31 18 Oct 22
Jason & Andrew and their team were very professional with their recommendations, install. The office staff were very responsive with booking the appointments. Within 3 days the from the time we got the very compatative quote and complete install. The installation team was wonderful , they respected our home and laid down Mats to ensure cleanliness. Definitely a 5++ star service and highly recommended. Thank you.
Jay W.
22:39 04 Oct 22
Everyone at Delta Air Systems, from initial contact through consultation and installation, was extremely professional, talented and friendly. They made sure that all questions were answered, all work was explained, and any issues were resolved before invoicing us. We didn't feel pressured to buy a specific brand/product and didn't feel pressured to lease/rent vs. buy (which we wanted to do). I would highly recommend Delta Air to anyone looking for an ethical, professionally-run business.
Next Reviews

kitchener utilities

union gas

HRAI

authorized contractor

Click for the BBB Business Review of this Heating & Air Conditioning in Waterloo ON

Delta Air Systems Furnace, Air Conditioning, Ductless HVAC repair and services in Kitchener, Waterloo, Cambridge and Guelph. Get comfortable for less!

Delta Air Systems has been in the business of improving the quality of the environment in homes and businesses since the 1950’s. Our approach has always been to listen first –fully understanding your needs makes it simple to develop practical and cost effective furnace or air conditioning solutions. We service what we sell and sell only what we service. That’s why we deal only with the top brand names in the industry – Daikin and Lennox. Heating, Cooling, Air Conditioners, Furnaces, Fireplaces & More. Established HVAC manufacturers with products that are certified, tested and approved and come with the best warranties in the business. Delta Air Systems has passed the Lennox Quality Dealer Standards Program and is a certified Daikin Comfort Pro. It is a commitment to excellence through top quality customer service consistent in all participating independent dealers. If your looking for furnace or air conditioning service, repair or replacement in Kitchener-Waterloo, Guelph or Cambridge areas look no further than Delta Air Systems.

We service what we sell and sell only what we service. That’s why we deal only with the top brand names in the industry. Established manufacturers with products that are certified, tested and approved. Furnace, heat pumps and heating repair, replacement, installation and servicing in Kitchener-Waterloo, Cambridge & Guelph. Call us to discuss GreenOn rebates and incentives programs. You could be eligible to save ALOT!

Call Now Button Skip to content