Deljo Heating, Cooling & Plumbing
Naperville, IL Furnace Repair · #3 of 6 · 34+ yrs
ⓘVouched Score is calculated from publicly available signals: Google rating & review count, Yelp rating, BBB grade, review sentiment, years in business, local search ranking, and provider website content. Not a guarantee of service quality.Embed this score
⏱ 34+ years in business
Review sentiment: 92/100
Overview
Deljo states it is a Mitsubishi Diamond Dealer for ductless systems. Deljo reports 30+ years serving Chicago-area homes. The company notes technicians train at Mitsubishi-approved centers. Deljo advertises flexible financing and free estimates for larger installs. Deljo lists 24/7 emergency response for heating and cooling issues in Chicago.
Deljo installs ductless mini-split systems and performs ductless maintenance across Chicago. Manufacturer Dealer: Mitsubishi Diamond Dealer is stated on their site. Years in business: 30+ years of local HVAC experience. Financing available and free estimates are listed for larger ductless projects.
Score breakdown
Above the Naperville, IL Furnace Repair average of 86/100. Ranks #3 of 6 listed Furnace Repair providers in Naperville, IL.
Editorial Review
79
46%
Google Rating
97
17%
Local Search Rank
88
9%
Review Sentiment
92
15%
Years in Business
100
4%
Review Volume
96
9%
Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →
vs. Naperville average
| Signal | Deljo Heating, Coolin… | Naperville avg | Delta |
|---|---|---|---|
| Vouched Score | 87/100 | 86/100 | +1 vs avg |
| Google rating | 4.9★ | 4.9★ | matches city average |
| Review volume | 3,435+ | 1,460+ | +1974 vs avg |
| Years in business | 34+ | 38+ | -4 vs avg |
What customers say
Reviewers praise:
clear explanationstrained technicianstimely installsmaintenance agreements
Pros
Strengths
- High Google rating (4.9★ across 3,435+ reviews)
- Long-established (34+ years in business)
When to choose them
- You need same-day or after-hours service
- You want manufacturer-warranty installation work
- You need to finance the work
- You want a top-rated provider with substantial review history (4.9★, 3,435+ reviews)
- You value a long-tenured local operator (34+ years in business)
Services
Service area
Published pricing
Discounts
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15% off
As published: 15% off"…e Agreement include: Discounted diagnostic charge 15% off of parts and repairs Regular maintenance on all c…"
Maintenance plans
-
maintenance program
As published: maintenance program"…t To maximize your savings, enroll in the regular maintenance program that our team provides! HVAC maintenance allows o…" -
maintenance plan
As published: maintenance plan"…VAC maintenance can be easy to overlook. Our HVAC maintenance plan, The Gold Star Program, solves that problem. Sign…" -
$24 per month
As published: $24 per month"…s at no extra charge System maintenance as low as $24 per month Heating Equipment Analyze heat exchangers for cra…"
Estimates
-
Free estimates
As published: Free estimates"…ial financing options to make upgrades affordable Free estimates and instant online quotes Our commitment is simpl…"
Call Now Schedule Your Service Deljo Heating and Cooling: HVAC and Plumbing Company in Chicago Reliable Service, 24/7 Support, and Flexible Financing for Your Family’s Needs Call Now Schedule Your Service Instant Online Quote Heating Cooling Heating Maintenance — read more — Heating Installations — read more — Emergency Heating Services — read more — Heating Promotions — read more — Cooling Maintenance — read more — Cooling Installations — read more — Emergency Cooling Services — read more — Coo
Guarantees & credentials
- Licensed technicians
Sourced from the provider's own website. We surface these as published; we do not independently verify each license or warranty.
Contact & hours
📞
🌐
📍
🕒
Emergency service 24/7
call for regular hours
Frequently asked questions
What are the pros of Deljo Heating, Cooling & Plumbing?
Based on public records and customer reviews: High Google rating (4.9★ across 3,435+ reviews); Long-established (34+ years in business); Authorized Mitsubishi Diamond Dealer; Emergency response: 24/7; Financing available; Free estimates.
When should I choose Deljo Heating, Cooling & Plumbing?
Choose them if: You need same-day or after-hours service; You want manufacturer-warranty installation work; You need to finance the work; You want a top-rated provider with substantial review history (4.9★, 3,435+ reviews); You value a long-tenured local operator (34+ years in business).
What is the Vouched Score for Deljo Heating, Cooling & Plumbing?
87/100. Top contributing signals: Years In Business 100/100, Google Rating 97/100, Google Review Count 96/100. The score blends public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment.
How long has Deljo Heating, Cooling & Plumbing been in business?
Deljo Heating, Cooling & Plumbing has been operating for 34+ years in Naperville, IL.
How can I contact Deljo Heating, Cooling & Plumbing?
Call Deljo Heating, Cooling & Plumbing at +1-773-657-9989. Address: 4300 W Bryn Mawr Ave, Chicago, IL 60646, USA.
What does furnace repair service typically cost when working with a Naperville, IL provider like Deljo Heating, Cooling & Plumbing?
Furnace service call / diagnostic fee typically runs $85–$225, and hot surface igniter replacement runs $165–$500 in Naperville, Illinois. These are area-wide market estimates, not Deljo Heating, Cooling & Plumbing's quotes. For an exact price, request a written estimate from Deljo Heating, Cooling & Plumbing.
What pricing terms does Deljo Heating, Cooling & Plumbing publish on their website?
Deljo Heating, Cooling & Plumbing's website publishes: 15% off, maintenance program, Free estimates. Promotions and plans change — confirm currently-available terms with Deljo Heating, Cooling & Plumbing before acting.
Does Deljo Heating, Cooling & Plumbing do Mini-Split Systems in Naperville, IL?
Yes. Deljo Heating, Cooling & Plumbing lists Mini-Split Systems among its services and serves Naperville, IL and Repair Naperville, IL. Call +1-773-657-9989 for a quote.
Does Deljo Heating, Cooling & Plumbing do Emergency HVAC Service in Naperville, IL?
Yes. Deljo Heating, Cooling & Plumbing lists Emergency HVAC Service among its services and serves Naperville, IL and Repair Naperville, IL. Call +1-773-657-9989 for a quote.
Compare with nearby providers
| Provider | Vouched | Years | |
|---|---|---|---|
Deljo Heating, Cooling & Plumbing (this company) ⭐ Manufacturer-Authorized Installer · ⭐ Mini-Split Repair |
87/100 | 4.9★ (3,435+) | 34+ |
Energy Services Air Conditioning & Heating Co. & Electrical ⭐ Highest Vouched Score · ⭐ Best NATE-Certified Shop |
95/100 | 4.9★ (2,165+) | 50+ |
Oncourse Heating, Cooling, Plumbing ⭐ Best NATE-Certified Shop · ⭐ Best Manufacturer-Authorized Repair |
94/100 | 5.0★ (1,815+) | 34+ |
| 80/100 | 4.9★ (390+) | 25+ |
Listed in
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Profile last updated July 26, 2026.