Pro Business

Deljo Heating, Cooling & Plumbing

Chicago HVAC Companies
Ranked #5 in Chicago | Grade B+
4.90 (3233 reviews)

Deljo Heating, Cooling & Plumbing

Local HVAC and plumbing company serving Chicago with repair, maintenance, and replacement services for heating, cooling, and plumbing systems.

Why Homeowners Choose This Business

Well-reviewed local service with responsive scheduling and straightforward recommendations. Technicians arrive prepared, explain options, and complete the work with care for the home. The office keeps customers updated from booking through completion.

Service Area

Headquartered at 4300 W Bryn Mawr Ave, Chicago, IL 60646 and serving customers across Chicago and surrounding communities.


How This Business Compares

A quick local comparison based on ranking, review strength, and market visibility.
  • Maintains a competitive standing in this market.
  • Shows review activity that is competitive for this local market.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Manufacturer
  Plumbing Services
  Renovation Services
  Service
  Furnace Repair
  Residential Service
  AC Repair
  Installations
  Boiler Service
  Repairs
  HVAC installation
  Heat Pump Service
  air conditioning maintenance
  Indoor Air Quality
  Thermostat Installation
  Plumbing Repair
  Water heater service
  drain troubleshooting
  pipe leak repair

Heating and air conditioning service and installation, seasonal tune-ups, indoor air quality checks, plumbing fixture repairs and replacements, drain troubleshooting, and water heater service.


Recent Reviews

4.90

(Based on 3233 reviews)

Google rating 4.90 from 3,233+ reviews reflects prompt service, courteous technicians, and consistent workmanship.

Deljo was professional, communicative, and a pleasure to work with from start to finish. I needed my entire HVAC system replaced, and from the moment I booked my appointment the team kept me up to date on their status and ETA. I chose Deljo over another company which was similarly priced simply because of the excellent service I received. My tech, Matthew, took the time to walk me through what was important to me in a new system, how it would work, and kept me informed. When the install team came out they were efficient, communicative, and professional throughout. Could not recommend Deljo enough and I will continue to use them for regular maintenance in the future

We purchased a new condo and needed some repair and upgrade work on our HVAC unit. Izzy was extremely professional and helpful and I could not be more pleased. I strongly recommend Deljo heating and cooling and particularly enjoyed the service I received from Izzy.

So appreciated everyone's work on this. Luis & Anthony on the install for my furnace, John for the estimate, Drew for a maintenance call, and I am so sorry that I forgot the name of the first person I worked with but they were awesome as well. I had two service calls on my 28 year old furnace in two weeks, got an estimate for a new unit, and then my old one stopped working on the coldest day of the year. We were able to schedule install within days. Everything went really smoothly. I also really appreciate your being able to give small time windows and hit them easily. I just changed plumbing services to Deljo as a result. Hoping I don't have to do a ton of business with you in the future, but if I do, I trust it will be great.

Plumbing and HVAC issues are always a massive headache, especially if you're not familiar with maintaining or repairing those parts of your home on your own. I had both HVAC and plumbing work done by Deljo and can highly recommend them for either need.

Some things that impressed me:
1) Rather than just telling me that my furnace's heat exchanger was cracked, the HVAC tech used a scope camera to show me the extent of the problem. Less reputable companies wouldn't do that. It was good to know that there was an actual issue rather than just someone trying to sell me a new furnace
2) Deljo were able to send out a salesperson to help select a new, efficient system that could replace the old, failing, 20-year-old system. They were even able to dispatch an installation crew the following business day, which was a godsend given the frigid temps Chicago was experiencing at the time
3) Although the new system initially worked well, an issue arose the next day due to a dampener getting stuck shut. Deljo sent out one of the crew that had installed the system to fix the issue within a few hours
4) For the plumbing work, Deljo offered an affordable full-home report and provided individual quotes for each bit of recommended work. This allowed me to select the most pressing issues that I wasn't comfortable handling myself
5) When the plumbers came out to do the work, they patiently answered my questions and had me test out the new sump pump and shower cartridge they installed. They even moved the condensate drainage plumbing from the new furnace over to the new sump pump at no charge (it had been improperly draining into an ejector pit previously)

Altogether, this customer-first approach was incredibly reassuring. Additionally, their prices are comparable to other HVAC and plumbing companies in the area, so you get a little extra bang for your buck. I'll be happy to be a repeat customer down the line when something else inevitably goes wrong with my house

Gregory was extremely helpful. He took the time to find the issue. We had two other companies come in and look at our furnace and they both told us everything was working fine. Gregory found our issue, showed and explained to us what was happening and clearly explained what was needed to fix it. He was very polite and knowledgeable. Excellent service.



Frequently Asked Questions

The team services furnaces, boilers, air conditioners, and heat pumps, including repairs, maintenance, and replacements. They also provide system evaluations to help recommend the right path forward for your home.

Yes, they address common plumbing problems such as leaking fixtures, running toilets, and water heater concerns. Technicians can assess the issue, explain options, and complete repairs or replacements as needed.

Call (773) 657-9989 or visit deljoheating.com to request service. The office will confirm details, provide available time windows, and share any preparation tips before arrival.

Seasonal tune-ups are available to help improve reliability and efficiency. A technician will inspect key components, check performance, and note any recommended repairs.

The company is based in Chicago and works across the city and nearby neighborhoods. Call to confirm availability for your address and timing.
 Verified Listing

Opening Hours


  • Monday Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours

Request Service


Business Details


Business Rating
4.90 (3233 reviews) Pro Business
Address
4300 W Bryn Mawr Ave, Chicago, IL 60646, USA, Chicago, IL 60646, US
Business Type
general_contractor

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