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Janssen Heating Cooling Plumbing & InsulationHVAC contractor in East Alton, IL

Janssen Heating Cooling Plumbing & Insulation is an HVAC contractor at 2 Terminal Dr, East Alton, IL 62024, ranked #6 of 29 insulation contractors in East Alton and rated 5.0 from 52 Google reviews. Open Monday to Saturday.

East Alton, ILUpdated 0 paid placements in any rankingHow we rank

Call (618) 541-2415Website ↗

Key facts

Key facts about Janssen Heating Cooling Plumbing & Insulation
Address2 Terminal Dr, East Alton, IL 62024Get directions
Phone(618) 541-2415
Websitejanssenheatingandcooling.com
HoursMonday to Friday: 8 AM – 6 PM; Saturday: 9 AM – 12 PM
Google rating5.0 from 52 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves East Alton and 11 towns within 25 miles: Bethalto, Wood River, Upper Alton, Alton, Edwardsville, Godfrey, Glen Carbon, Pontoon Beach, Maryville, Granite City and Troy.

Based in East Alton, ILView on map

Opening hours

Opening hours for Janssen Heating Cooling Plumbing & Insulation
DayHours
Monday8 AM – 6 PM
Tuesday8 AM – 6 PM
Wednesday8 AM – 6 PM
Thursday8 AM – 6 PM
Friday8 AM – 6 PM
Saturday9 AM – 12 PM
SundayClosed
  • Open evenings — no
  • Open Saturdays
  • Open Sundays — no

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

Janssen Heating Cooling Plumbing & Insulation compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Janssen Heating Cooling Plumbing & Insulation (this business)—555.0 (52)—YesNo
Koala Insulation of Gateway West & Metro East IL#4554.9 (528)—NoNo22.3 mi
Central Mechanical Insulation#5554.1 (8)———2.5 mi
Gateway RetroFoam LLC#7554.9 (86)———21.7 mi

See all 29 ranked insulation contractors in East Alton

Reviews

ContractorsRanked reviews

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Google

5.0from 52 Google reviews

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Questions about Janssen Heating Cooling Plumbing & Insulation

How is Janssen Heating Cooling Plumbing & Insulation ranked in East Alton?

Janssen Heating Cooling Plumbing & Insulation is ranked #6 of 29 insulation contractors in East Alton by CR Score, with 55 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Janssen Heating Cooling Plumbing & Insulation’s hours?

Janssen Heating Cooling Plumbing & Insulation is open Monday to Saturday. Its listed hours are Monday to Friday, 8 AM – 6 PM; Saturday, 9 AM – 12 PM. On Saturdays it is open 9 AM to 12 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Janssen Heating Cooling Plumbing & Insulation serve?

Serves East Alton and 11 towns within 25 miles: Bethalto, Wood River, Upper Alton, Alton, Edwardsville, Godfrey, Glen Carbon, Pontoon Beach, Maryville, Granite City and Troy. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about Janssen Heating Cooling Plumbing & Insulation?

Janssen Heating Cooling Plumbing & Insulation has a rating of 5.0 from 52 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Janssen Heating Cooling Plumbing & Insulation?

Call Janssen Heating Cooling Plumbing & Insulation on (618) 541-2415. The business is at 2 Terminal Dr, East Alton, IL 62024. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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