Company Facts
Guardian Heating & Cooling Service at a Glance
The work
- Best for
- quick AC replacements and full-service HVAC from a 70-year-old local firm
- Primary service
- HVAC
Where
- Headquarters
- Chicago, IL
- Service area
- 3 cities
- Emergency service
- Yes, 24/7
Money and guarantees
- Free estimates
- Not advertised
- Financing
- Available
- Workmanship warranty
- 100% satisfaction guarantee on residential installations. Ask for parts and labor warranty terms in writing.
Editorial Review
Our Take on Guardian Heating & Cooling Service
Guardian has more than 70 years of local history and 4.8 from 1,221 Google reviews, read September 16, 2026. Reviews describe next-morning AC installs and technicians who go beyond the basic job. A few customers mention rising prices, so compare quotes.
Best for: quick AC replacements and full-service HVAC from a 70-year-old local firm
What We Like
- Locally owned and serving Chicago since 1953
- 4.8 rating from 1,221 Google reviews, read September 16, 2026
- Next-morning AC installs described in reviews
- 100% satisfaction guarantee on residential installations
- Rebate help and flexible financing
Things to Consider
- Some reviewers mention recent price increases
- License numbers and warranty length are not published
- Free estimate policy is not stated
Google Reviews for Guardian Heating & Cooling Service
Customer ratings shown here come from Google. They are separate from our editorial review above.
Google rating
4.8
Based on 1221 Google reviews
Review data updated September 16, 2026
Editorial Ranking
Why Guardian Heating & Cooling Service Made Our Top 10
It holds position 8 in 10 Best HVAC Companies in Chicago, IL.
Services Offered
Specialties
- High velocity heating and AC
- Snow melt systems
- Variable refrigerant flow
- Home automation and WiFi thermostats
- Air conditioning maintenance
- Air conditioning installation
- Air conditioning repair
- Ductless HVAC
Areas Served
Based in Chicago, IL.
- Chicago, IL · HQ
- Lyons, IL
- Northbrook, IL
iAbout service coverage
Coverage is as the business describes it, cross-checked against where its recent documented work is. A company will often travel beyond the areas listed here for a large job and decline a small one at the same distance, so confirm your address before scheduling.
About Guardian Heating & Cooling Service
Guardian Heating & Cooling Service has been working on Chicago homes since 1953. It is locally owned and operated and runs from Central Park Avenue in Irving Park on the Northwest Side, an area packed with bungalows, frame houses and two-flats.
The service list covers air conditioning and heating maintenance, repair and installation, boiler service, ductless systems, heat pumps, indoor air quality and duct cleaning. The website describes its technicians as factory-authorized and professionally trained, and it offers a 100% satisfaction guarantee on residential installations. It also helps customers with rebates and offers flexible financing.
Speed is a common theme in the reviews. One family with a toddler had an air conditioner stop cooling their 3,000-square-foot house in the evening, called Guardian for the second time, and got it sorted quickly. Another customer calls the company a lifesaver after a short-notice quote was followed by a new AC installed the very next morning, and praises a rep named Jonathan for being informative. A third was surprised by how low the price was for an AC cleaning, then realized why when technician Peter left the unit looking nearly new. Some reviewers mention that prices have gone up recently, which is worth factoring in when comparing quotes.
License numbers, warranty length, hours and emergency coverage are not spelled out on the pages we reviewed, so confirm them when you call.
Who it suits: Northwest Side homeowners who want a long-established local company that can move quickly on a replacement, and anyone who wants help finding rebates. Who it suits less well: shoppers focused purely on the lowest price, since some reviewers note rising rates.
Before booking, ask what the satisfaction guarantee covers in writing, whether after-hours emergencies are handled, and which rebates apply to your new equipment.
iWhere this information comes from
Company history, ownership and capability details on this page are provided by the business and reviewed by our editors for plausibility and consistency. They are not the same as the credentials block, where each item carries its own verification status and source.
Credentials
- BBB A ratingBetter Business BureauReported
- Carrier President's AwardCarrierReported
- Aeroseal CertifiedAerosealReported
iWhat verified means here
Verified means we checked the credential against the authority that issues it and recorded the date. Reported means the business told us and we could not independently confirm it. We publish both, labelled, rather than dropping what we could not check.
Reputation by Source
We show each source separately rather than blending them into a single score, because they measure different things.
Google
4.8/ 5
1221 customer reviews
TenBestFind
Editorially reviewed
Ranked #8 in Chicago hvac, September 2026
Company Pricing & Estimates
What this company publishes about its own pricing.
- Financing
- Available
- Emergency callout
- Available 24/7
- Workmanship warranty
- 100% satisfaction guarantee on residential installations. Ask for parts and labor warranty terms in writing.
Local Market Pricing
What Chicago homeowners generally pay, independent of this company.
- AC replacement, existing ductwork
- $5,500–$9,500
- Heat pump replacement
- $7,500–$13,800
- Furnace replacement
- $3,500–$7,500
- Repair call
- $150–$600
Project Photos
Business-submitted, reviewed by our editors
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Guardian Heating & Cooling Service FAQs
How fast can Guardian replace an air conditioner?
Often very quickly. One reviewer got a quote on short notice and had a new air conditioner installed the next morning.
Does Guardian help with rebates and financing?
Yes. Guardian says it helps customers find rebates on new equipment and offers flexible financing, plus a 100% satisfaction guarantee on residential installations.
Is Guardian Heating & Cooling Service licensed and insured?
We checked 0 of 3 credentials against the issuing authority. Verified items carry the date we checked; reported items are what the business told us and we could not independently confirm.
What areas does Guardian Heating & Cooling Service serve?
Chicago, Lyons, Northbrook. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.
Does Guardian Heating & Cooling Service offer emergency service?
Yes, the company lists emergency availability. Response time depends on demand, and after a storm every company in the market is stretched.
What warranty do they offer?
100% satisfaction guarantee on residential installations. Ask for parts and labor warranty terms in writing.. There are usually two warranties on a job: the manufacturer covers materials, the contractor covers workmanship. Get both in writing and check whether the workmanship coverage transfers if you sell.
How was this profile built?
Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.
Can a business pay to improve its profile?
A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.
Is Something Incorrect?
Business information changes. Tell us about an address, phone, website, service area, credential or ownership change, or let us know if this company has closed.
Suggest an UpdateOwn Guardian Heating & Cooling Service?
Claim your profile to verify and maintain your business information, services and service area.
iWhat claiming does
Claiming lets you correct and maintain the factual information on this profile. Claiming or upgrading a profile does not guarantee inclusion in a TenBestFind ranking and never affects ranking position, which is decided editorially.
About This Business Profile
- Last reviewed
- September 2026
- Profile last updated
- September 18, 2026
- Google review data updated
- September 16, 2026
- Sources checked
- Issuing authorities, Google Business Profile, Company website
- Sponsorship status
- No commercial relationship