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Interstate Heating Co., Inc.HVAC contractor in Sussex, WI

Interstate Heating Co., Inc. is an HVAC contractor at N53 W24950 S Corporate Cir, Sussex, WI 53089, ranked #1 of 300 HVAC contractors in Sussex and rated 4.9 from 932 Google reviews. Open 24 hours a day, 7 days a week.

Sussex, WIUpdated 0 paid placements in any rankingHow we rank

Call (262) 372-2772Website ↗

Key facts

Key facts about Interstate Heating Co., Inc.
AddressN53 W24950 S Corporate Cir, Sussex, WI 53089Get directions
Phone(262) 372-2772
Websiteinterstateheating.com
HoursOpen 24 hours, 7 days a week
Google rating4.9 from 932 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Sussex and 11 towns within 25 miles: Pewaukee, Hartland, Waukesha, Menomonee Falls, Brookfield, Delafield, Elm Grove, Richfield, Germantown, New Berlin and Wauwatosa.

Based in Sussex, WIView on map

Opening hours

Opening hours for Interstate Heating Co., Inc.
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

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

Interstate Heating Co., Inc. compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Interstate Heating Co., Inc. (this business)—654.9 (932)—YesYes
Kettle Moraine Heating & Air Conditioning, LLC#2644.9 (4,102)—YesYes10.5 mi
Mr. Holland's Home Services#3644.8 (7,086)—YesYes14.8 mi

See all 300 ranked HVAC contractors in Sussex

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.9from 932 Google reviews

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Questions about Interstate Heating Co., Inc.

How is Interstate Heating Co., Inc. ranked in Sussex?

Interstate Heating Co., Inc. is ranked #1 of 300 HVAC contractors in Sussex by CR Score, with 65 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 Interstate Heating Co., Inc.’s hours?

Interstate Heating Co., Inc. is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does Interstate Heating Co., Inc. serve?

Serves Sussex and 11 towns within 25 miles: Pewaukee, Hartland, Waukesha, Menomonee Falls, Brookfield, Delafield, Elm Grove, Richfield, Germantown, New Berlin and Wauwatosa. 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 Interstate Heating Co., Inc.?

Interstate Heating Co., Inc. has a rating of 4.9 from 932 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 Interstate Heating Co., Inc.?

Call Interstate Heating Co., Inc. on (262) 372-2772. The business is at N53 W24950 S Corporate Cir, Sussex, WI 53089. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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