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Design Heating Systems Inc.

HVAC contractor in London, ON.

Trade
HVAC contractor
Business address
1281 Florence St, London, ON N5W 2N6, Canada
Telephone
(519) 457-0680
Website
designheatingsystem.com
Hours
  • Monday7:30 am - 4:00 pm
  • Tuesday7:30 am - 4:00 pm
  • Wednesday7:30 am - 4:00 pm
  • Thursday7:30 am - 4:00 pm
  • Friday7:30 am - 4:00 pm
  • SaturdayClosed
  • SundayClosed

From the business's Google listing, checked Oct 2026

Register
ON register

Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the provincial licensing body.

Google Reviews

4.0 (21)

  • What a great company!! 5 stars plus!!! Our Air Cond quit of course on the hottest week (week of July 1st) Renier was out same day and got us up and running temp., he came back in a few days and finished up Quick, friendlyand reasonably priced So happy 😊 Thanks Renier (and Candace) We appreciate it Larry and Karen Smith

    Karen S.

  • AC broke down 5 times in couple months after a new unit was installed.

    TA A.

  • My central air was not blowing cold air anymoore, so I had my checked by another company. The charged $140 to figure out what was wrong with it which I was perfectly find what that but than told me it would be very expensivie to fix. I had a bad feeling that this was an exaggeration and the technicians were not professional in my opinion. So I called Design Heating Systems and they told me they had do to their won diagnostic check and I said I was find with that. They came, (Brent) did the check and fixed it for very inexpensive and quickly, I was very impressed and the technician was professional and a nice guy on top of that. Very well done Brent,

    Richard R.

  • Great service. Thank you so much

    Ami S.

  • I haven’t had service that I was blown away from in years. Customer service was off the charts! Worked with my budget and my timeline as I needed some custom work in a pinch. Thank you so much again for your help. I sincerely appreciate it.

    Jose B.

  • This was the only company in town that was able to fix my home HVAC problem. I had half a dozen other trades unable to diagnose the problem and was ready to start ripping out walls. Reasonable pricing for labour and material. Brent is a great guy as well a pleasure to deal with.

    Manav S.

  • I have been dealing with Reiner and his crew for the past 20 years. They have always responded in a timely fashion and provided excellent service.

    Michael M.

  • Father and Son team amazing workmanship. Built a home and they did A+++ work.

    Hussein Z.

  • Failed to return calls after weeks, even when a follow up was verbally promised. I had to chase them to even talk to me. Wouldn't even answer the phone.

    Craig O.

  • After my Armstrong furnace quit on a Friday afternoon the company I've used for years left me high and dry. So I called Design... I left a message @ 4:30 on a Friday. By 5:30 I had heard back. By 7:30 Reiner had shown up and fixed my furnace. I will most certainly give them a call if I need service in the future.

    David S.

  • Excellent service

    Jairo R.

  • I called Design Heating after Reliance said I needed $1000 of replacement parts and put a red tag on the furnace. I was shown that none of that was true. I received friendly, helpful, convenient service. This is my heating/cooling/air filter company from now on.

    Nancy M.

  • Had an emergency this morning with my furnace which stopped working overnight. I called them before I left for work and they were able to squeeze me into their schedule early this morning. It took them less than an hour and it was up and going again. Thanks guys.

    Peter P.

  • They were supposed to replace my air conditioner. Never showed, never answered the phone and never returned voicemails

    Paul M.

  • Terrible service. Four phones and appt. set - never showed up.

    Fred B.

  • Excellent service! Very professional tradesmen. Knowledgeable, efficient, left my home tidy and were very polite.

    Michelle M.

About Design Heating Systems Inc.

Design Heating Systems Inc. says it installs heat pumps alongside furnaces, air conditioners, fireplaces and water heaters. Established in London in 1996 by Reiner Weber, the company also offers maintenance plans for ongoing equipment care.

Heat pumps and maintenance plans in London

The company describes its work as installation across heating, cooling and related home-comfort equipment. Its maintenance plans are presented as options intended to fit different maintenance needs.

Design Heating Systems Inc. has a 4.0 rating from 21 reviews. Reviewers most often mention prompt repairs, technician service and pricing; other reviews describe repeat equipment trouble or difficulty getting a return call.

Weekday availability for HVAC work

Hours run Monday through Friday from 7:30 am to 4:00 pm. The company’s long-running London presence dates to 1996.

Services, brands and warranty details come from the company's own website. Ratings, hours and reviews come from Google. Town figures come from Statistics Canada and Environment Canada.

More HVAC contractors in London

About London

Population422,324 (2021)
Average yearly snowfall76.5 inches

Sources: Statistics Canada, 2021 Census. Environment and Climate Change Canada, Canadian Climate Normals 1981-2010.