frequently asked questions

Yes, we provide free estimates for new installations and system replacements. Contact us at (269) 816-1687 to schedule your estimate.

Yes, we offer 24/7 emergency services for heating, cooling, and refrigeration issues. We're known locally for fast turnaround and emergency support.

L & J Mechanical is rated A+ with the Better Business Bureau. We're committed to excellent customer service and customer satisfaction.

Yes, we service all makes and models of HVAC equipment. We're also a Rheem Pro Partner and Mitsubishi dealer.

Yes, we offer military and first responder discounts. Contact us at (269) 816-1687 for details on available discounts.

Yes, we serve Three Rivers and surrounding Michigan communities. We're based in Sturgis and provide service throughout southern Michigan.

Yes, we offer same-day service options with fast diagnostics. We're extremely responsive and efficient with our communication and scheduling.

L & J Mechanical is a family-owned mechanical contractor with decades of hands-on experience. We've been proudly serving Sturgis and surrounding communities.

Yes, we provide full repair and installation for walk-ins, reach-ins, and refrigerated prep lines for restaurants and food distributors.

Yes, we serve Coldwater and support commercial kitchens, restaurants, schools, and facilities throughout the area with rapid response service.

Yes, we install energy-efficient ductless systems ideal for remodels, additions, or offices. We offer complete installation and multi-zone configurations.

AC systems should be serviced at least once a year, ideally before summer. Regular maintenance keeps refrigerant levels balanced, coils clean, and airflow optimized — preventing costly breakdowns and keeping energy bills lower.

Too much or too little refrigerant can damage the compressor and reduce efficiency. A technician must check and adjust refrigerant levels during maintenance to protect the system and maintain consistent cooling performance.

Frequent repairs, rising energy bills, and inconsistent cooling are common signs it's time for a replacement. An oversized or undersized unit also cycles incorrectly, wearing out the compressor faster than expected.

Yes, modern heat pumps operate efficiently well below freezing temperatures. Hybrid and inverter models are specifically designed for Michigan's climate, delivering reliable heating even during the coldest months while reducing energy costs.

SEER measures cooling efficiency and HSPF measures heating efficiency — higher numbers mean lower operating costs. Heat pumps use both ratings, so choosing a high-rated model can significantly reduce your utility bills year-round.

Heat pumps provide both heating and cooling in one system, often at lower operating costs than separate units. They run quietly, require less maintenance, and are especially efficient during Michigan's mild shoulder seasons.

The EPA reports indoor air can be up to 100 times more polluted than outside air. Modern energy-efficient homes are tightly sealed, trapping pollutants like dust mites, mold spores, pollen, and chemical vapors from building materials.

Options include HEPA air cleaners, media air cleaners, electronic air cleaners, steam and bypass humidifiers, dehumidifiers, and UV treatment systems. Each targets specific pollutants and is installed directly into your existing HVAC system.

It installs into your central heating and cooling system, filtering air every time it runs. Contaminants like dust, pet dander, bacteria, and mold spores are captured before clean air is distributed throughout every room via ductwork.

Unlike portable units requiring monthly attention, whole-home air cleaners typically need filter maintenance only every one to two years. That makes them far more convenient while delivering continuous, consistent air filtration throughout your home.