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Professional air conditioning services in Northwest Indiana.
Stay Cool All Season With Siemer
TRUSTED AC EXPERTS SINCE 1987
24-Hour Emergency Service Available
Schedule AC service online or call us for availability.
Contact Siemer Heating, Cooling & Plumbing Today
Real Results from Real Homeowners
“The best service! Craig, Dennis and John did a great job on the install of our new furnace and AC. Very friendly and knowledgeable, answered all our questions and very professional. We will never use any other company after our experience. Thanks Siemer!”
- Joe and Jodi K.
“Andrew was professional and made suggestions as to how to better maintain our AC units.
He made sure to thoroughly
answer all our questions.”
- Teri M.
“Chris was very friendly explained everything to us where we could understand it.
Let us know what he found and the recommendations he suggested to get done.
On time and very efficient.”
- ROBERT G.
FREE DIAGNOSTIC WITH ANY PAID REPAIR
TRUSTED AC EXPERTS SINCE 1987
TO HELP KEEP YOU COOL
For over 35 years, Siemer Heating, Cooling & Plumbing has been the premier provider of HVAC and plumbing services in Northwest Indiana.
Family-owned and operated since 1987, we've built our reputation on delivering exceptional workmanship, honest advice, and responsive customer service.
Our team lives and works in our communities, and we treat every customer like a neighbor.
About Siemer Heating, Cooling & Plumbing
Siemer has been delivering superior comfort since 1987
24/7 Emergency Services
NATE-Certified Technicians
Hundreds of
5-Star Reviews
Competitive Pricing & Financing
Expert installation of energy-efficient systems perfectly sized for your home. We offer free in-home consultations and help you select the ideal system for your home.
Air Conditioning Replacement & Installation
How Often Should I Have My AC Serviced?
We recommend annual professional maintenance, ideally in spring before the cooling season begins. Regular maintenance ensures optimal performance, prevents unexpected breakdowns, and maintains your warranty.
FAQ
How Long Should My Air Conditioner Last?
With proper maintenance, most modern AC systems last 12-15 years. However, if your system is over 10 years old and requires frequent repairs, it might be more cost-effective to replace it with a more energy-efficient model.
What SEER Rating Should I Look For In A New AC System?
The minimum SEER (Seasonal Energy Efficiency Ratio) rating for new installations is 14, but we typically recommend systems with 16 SEER or higher for Northwest Indiana homes to maximize energy savings. Higher SEER ratings mean greater efficiency and lower utility bills.
How Can I Reduce My Cooling Costs?
Beyond investing in an energy-efficient system, we recommend programmable thermostats, regular maintenance, sealing ductwork, improving insulation, using ceiling fans, and keeping filters clean. Our technicians can provide a personalized energy-saving plan for your home.
Emergency Service Available
Address
400 Kennedy Avenue
Schererville, IN 46375
Office Hours
Mon – Fri 8 a.m.–4 p.m.
Sat – Sun closed
We offer flexible financing options with approved credit, including plans with 0% interest.
Our expert technicians are ready to help you find the perfect air conditioning solution for your home and budget.
Stay Comfortable With Our Seasonal Promotions
Cedar Lake, IN
Crown Point, IN
Dyer, IN
East Chicago, IN
Gary, IN
Griffith, IN
Hammond, IN
Highland, IN
Lowell, IN
Proudly Serving
Northwestern Indiana
Munster, IN
Portage, IN
Schererville, IN
St. John, IN
Valparaiso, IN
Whiting, IN
Beecher, IL
Calumet City, IL
Chicago Heights, IL
Crete, IL
Flossmoor, IL
Hegewisch, IL
Homewood, IL
Lansing, IL
Lynwood, IL
South Holland, IL
Steger, IL
Thornton, IL
Frequently Asked Questions
Schedule Ac Service With Siemer
Siemer Provides Complete
Air Conditioning Services
Fast, reliable repairs for all makes and models. Our fully-stocked service vehicles ensure we can solve most problems in a single visit–any time, day or night.
24/7 AC Repairs
Preventative care to maximize efficiency and extend the life of your system. Our comprehensive tune-ups include cleaning, calibration, and thorough inspection.
AC
Maintenance
Perfect solutions for homes without existing ductwork or for adding cooling to specific areas like additions or converted spaces.
Ductless Mini-Split Systems
Complement your AC system with humidifiers or dehumidifiers for healthier indoor air.
Indoor Air Quality Solutions
Installation and maintenance of electric heat pumps that provide your home with heating and air conditioning.
Heat Pump Services
Expert Air Conditioning for every home
At Siemer, we understand that a reliable air conditioning system is essential for your family's comfort during Indiana's hot summers.
Our comprehensive AC services are designed to keep your system running efficiently year after year, saving you money on energy costs while maintaining ideal indoor temperatures.
Whether you need a simple repair, routine maintenance, or a complete system replacement, our experienced team delivers solutions tailored to your specific needs and budget.
TRUSTED AC EXPERTS SINCE 1987
4.9
on 1405+ Reviews
Restrictions may apply. Limit (1) coupon per household. Business hours only.
Call for more information.
Diagnostic charge on second opinion for repairs with proff of previous diagnsosi within the last 30 days
Expires 9/26/25
FREE
Restrictions may apply. Limit (1) coupon per household. Business hours only.
Call for more information.
Expires 9/26/25
0%
Interest Finance Options Available
Restrictions may apply. Limit (1) coupon per household. Business hours only.
Call for more information.
Wireless Ring Doorbell with Installation of any unit
Expires 9/26/25