Siemer Heating, Cooling & Plumbing
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Claim This BusinessAbout Siemer Heating, Cooling & Plumbing
Siemer Heating, Cooling & Plumbing has served Schererville and the broader Lake County region since 1991. With 1,636 verified reviews averaging a 4.9-star rating, this locally owned contractor handles residential and light commercial projects across Hammond, Gary, Merrillville, Crown Point, and surrounding towns. The company holds state licensing for heating, cooling, and plumbing work, and operates a service fleet that responds to calls 24 hours daily, including weekends and holidays.
What distinguishes Siemer from regional competitors is their in-house team model, no subcontractors means consistent craftsmanship on multi-day installations. Recent reviews highlight boiler and water heater system installations, furnace replacements, ductless mini-split setups for upper-level retrofits, and sump pump emergencies. The company also handles preventive maintenance contracts, ensuring winter readiness for Indiana's freeze-thaw cycles.
Customers repeatedly name technicians who explain options without pressure. Paul guided one homeowner through three estimates before selecting a furnace and ductless system. Alejandro arrived within 20 minutes on a Friday night furnace failure. Jack replaced a sump pump mid-rainstorm to prevent basement flooding. Kraig, Denis, Tyler, and Anthony completed a three-day boiler installation while maintaining daily communication with the homeowner.
What Customers Say
All five detailed reviews award five stars, with technicians named in each: Kraig, Denis, Tyler, Anthony, Alejandro, Chris, Paul, and Jack. Four reviewers describe emergency or after-hours response, including same-night arrival during furnace failures or rainstorms. The consistent theme across reviews is transparent communication, technicians explain options, provide multiple choices, and ensure homeowners understand new systems before work begins.
Working Hours
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Services
Furnace Installation & Replacement
Complete furnace system installation including new ductwork, thermostat setup, and efficiency configuration for Indiana winters.
Boiler & Water Heater Systems
Residential boiler installation and hot water heater replacement, including heat exchanger and component sizing.
Central Air Conditioning
AC unit installation, refrigerant handling, and duct distribution setup for whole-home cooling.
Ductless Mini-Split Systems
Multi-zone mini-split installation for additions, retrofits, and room-by-room temperature control without ductwork.
Plumbing Repairs & Replacements
Sump pump replacement, leak detection, fixture repairs, and water heater plumbing connections.
Emergency HVAC & Plumbing
24/7 emergency response for furnace failures, pipe issues, and storm-related water damage.
Preventive Maintenance
Seasonal HVAC tune-ups, filter replacement, and system inspections to extend equipment lifespan.