MARK OVERLY HVAC LLC
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About MARK OVERLY HVAC LLC
MARK OVERLY HVAC LLC maintains a 4.9-star average across eight verified client reviews in Lititz, Pennsylvania, delivering heating and cooling solutions to residential and commercial properties throughout Lancaster County. The company operates around the clock every day of the week, ensuring emergency service availability for furnace failures, air conditioner breakdowns, and other climate-control emergencies. Based at 117 Keener Road in Lititz, the business serves surrounding communities including Ephrata, Manheim, and surrounding Lancaster County municipalities.
The company distinguishes itself through specialized systems including geothermal installations, tankless hot water heaters, steam heating maintenance, and home automation integrations. Combustion analysis and carbon monoxide safety testing accompany every heating system visit, addressing indoor air quality concerns specific to Pennsylvania winters. Air balancing services optimize distribute airflow throughout multi-story residences, a critical specification for older homes with original ductwork.
Client testimonials highlight several distinct service scenarios. Mandy Rice describes how the technician diagnosed her boiler as functional when another contractor recommended replacement, saving her significant expense. Steve Brown notes same-day arrival during a recent heating emergency, restoring warmth within hours. Chris Watterson recounts a whole-house cooling system installed in May 2020 that resolved persistent hot spots in upper-level bedrooms. Several reviewers emphasize transparent pricing and upfront cost estimates before work begins.
What Customers Say
Eight reviewers collectively award 4.9 stars, with seven giving five-star ratings and one providing four stars. Emergency same-day service appears in three positive reviews, while five reviewers specifically mention fair or competitive pricing.
Working Hours
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| WednesdayToday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Services
Heating System Repair & Installation
Furnace maintenance, boiler service, heat pump repair, and new heating equipment installation for residential and commercial properties.
Air Conditioning & Cooling
Central ACinstallation, cooling system repairs, and maintenance for existing air conditioning equipment.
Geothermal Systems
Ground-source heat pump installation and servicing for energy-efficient climate control.
Hot Water Heating
Traditional tank-type water heater installation, repairs, and maintenance services.
Tankless Water Heaters
On-demand water heating solutions for endless hot water and reduced energy consumption.
Steam Heating
Specialized maintenance and repair for steam-based heating systems common in older properties.
Home Automation Integration
Smart thermostat installation and programmable climate control systems for modern convenience.
Air Balancing & Performance Testing
Duct optimization and airflow measurement to ensure consistent temperatures throughout multi-room structures.