Top 7 HVAC companies in Lake, Indiana

Lake County sits in a heating-dominant mixed-humid climate with 5,400 heating degree days against 1,100 cooling degree days. Natural gas remains the primary heating fuel while central air conditioning saturation is already high. Seven contractors appear in public listings with review counts from one to fourteen. Their Bayesian-adjusted ratings sit between 4.739 and 4.839 after shrinkage toward the national mean of 4.764. All operate under the general-contractor category.

Cost of HVAC work in Lake County

Modeled typical full-system install stands at $9,000 with a published range of $8,100 to $9,900. Separate 2025 invoiced data shows an average of $15,472 and an upper-quartile figure of $24,416. Labor rates are listed at $100 per hour. Permit fees range from $80 to $300 depending on jurisdiction. The two sources diverge because one reflects modeled equipment and labor while the other captures actual billed amounts that include variable mark-ups and change orders. Both figures place Lake County in the national average cost tier.

The shortlist

Companies are ranked by a Bayesian-adjusted rating that pulls each star rating toward the national mean of 4.764 until review volume is large enough for the raw score to stand alone. Small additional weight is given for a public website, HVAC-specialist listing rather than general contractor, and published 24/7 availability. This shortlist is built from public listing data, not a review of work performed.

KMK Heating & Air Conditioning

KMK Heating & Air Conditioning lists 14 reviews at a raw 5.0 that adjusts to 4.839 after shrinkage toward 4.764. The 14 reviews supply enough weight that the score moves only modestly downward. The firm operates from 13855 W 117th Ave, Cedar Lake, IN 46303 as a general contractor and publishes 24/7 availability plus a website. Its phone number is (708) 895-5394. These signals indicate steady local volume and round-the-clock coverage. The numbers cannot reveal whether the fourteen reviews cover recent furnace or heat-pump work or older service calls.

After Hours Heating & Cooling Corp

After Hours Heating & Cooling Corp records 9 reviews at a raw 5.0 adjusted to 4.818. With fewer reviews than the leader, the pull toward 4.764 is slightly stronger. It operates from 109 E Lake St, Griffith, IN 46319, lists 24/7 service and a website, and answers at (219) 765-0945. The listing category remains general contractor. The data show consistent five-star feedback yet leave open how many jobs involved full system replacements versus repairs.

Isaac’s Air Solutions , Air Conditioner & Furnace Repair & Service

Isaac’s Air Solutions , Air Conditioner & Furnace Repair & Service holds 7 reviews at a raw 5.0 that becomes 4.809 after adjustment. The smaller sample produces a larger downward shift toward 4.764. Located at 2436 Old Hobart Rd, Lake Station, IN 46405, the firm offers 24/7 availability and a website; its phone is (219) 951-7383. General-contractor status is listed. The figures cannot distinguish between performance on dual-fuel versus straight gas installations.

Independent HVAC services

Independent HVAC services shows 2 reviews at a raw 5.0 adjusted to 4.779. Limited reviews cause noticeable shrinkage toward the mean. The address is 1802 Norwood Dr, Griffith, IN 46319; the phone is (312) 203-3490. A website is present but 24/7 coverage is not published. General-contractor listing applies. The two reviews supply too little information to judge consistency across seasons.

Intelligent HVAC/R

Intelligent HVAC/R records 8 reviews at a raw 4.9 that rises to 4.793 after adjustment because the score sits above the 4.764 mean and the modest review count allows some upward movement. It operates from 6287 N 600 W, Lake Village, IN 46349, publishes 24/7 availability, and answers at (219) 819-9024. No website appears. General-contractor status is listed. The numbers leave unclear how often the firm handles the humid-summer latent loads typical of zone 5A.

Lake Heating & Ventilating, Inc.

Lake Heating & Ventilating, Inc. lists 4 reviews at a raw 5.0 adjusted to 4.792. The small sample produces moderate shrinkage toward 4.764. The address is 117 E North St, Crown Point, IN 46307 and the phone is (219) 662-0300. No website or 24/7 listing appears. General-contractor category applies. The four reviews cannot indicate whether the firm routinely sizes equipment for the 3 °F winter design temperature.

Lake Heating & Ventilating Inc

Lake Heating & Ventilating Inc shows 1 review at a raw 4.0 that adjusts to 4.739. The single review sits below the mean, so the score moves upward. Located at 1807 Forest Ln, Crown Point, IN 46307, the firm shares the phone (219) 662-0300. No website or 24/7 listing is published. General-contractor status applies. One review supplies almost no information on reliability or recent project scope.

Licensing and permits

Indiana maintains no statewide HVAC contractor licensing board. Cities and counties each set their own requirements, and many impose none. Plumbers alone are licensed at the state level through the Indiana Plumbing Commission. Insurance minimums therefore vary by jurisdiction rather than by any uniform rule. Mechanical permits are likewise decided locally; some Lake County towns require them while others do not. When a permit is issued, the installing contractor may need to file a Certificate of Completion and Compliance with the issuing department. Homeowners must verify current local rules directly with the city or town building department before work begins.

Climate demands on equipment

Zone 5A conditions dominate Lake County, producing 5,400 heating degree days against only 1,100 cooling degree days. Winter design temperature reaches 3 °F while summer design sits at 90 °F with humid summers and dry winters. The load profile is heating-leaning mixed, so dual-fuel systems see wide use. Equipment must maintain capacity at low winter temperatures and manage summer humidity without short-cycling. Oversizing remains a common risk because cooling loads are modest relative to heating loads; proper Manual J calculations are required to avoid humidity problems and excess cycling.

Available incentives

The Indiana Home Energy Rebates program remains active with heat-pump rebates up to $8,000 and HOMES rebates reaching $12,000-$18,000. No state tax credit exists. Utility programs through NIPSCO and other providers offer $200-$1,000 but require participation in approved contractor networks. Federal 25C and 25D credits expired at the end of 2025. Only the commercial 48E ITC survives for third-party-owned systems. Because contractor-network rules apply to the largest rebates, homeowners must confirm network membership before selecting an installer.

How to choose an installer

Request the current local license or registration number from the city or county, an EPA 608 card, and proof of insurance. Confirm the firm belongs to any utility rebate network if incentives are part of the project. Ask for recent references on similar dual-fuel or heat-pump work. Verify that the contractor will pull any required mechanical permit. These steps address the absence of statewide licensing and the variation in local rules.