Straight answers about heating, cooling, water heaters, and indoor air quality, written by the team at 717 Mechanical LLC in Marietta, PA. No sales pitch, just the same advice we give homeowners across Lancaster County every day: how long equipment should last, when a repair makes sense, and what to look for before you spend money on a new system.
We add new guides as the seasons change, so check back before your next tune-up or equipment decision. Have a question a post does not answer? Call us at (717) 468-9567 and we will give you a straight answer over the phone.
Heating · August 24, 2026
Once a year, in early fall: why annual service matters for efficiency, safety, and warranty, what a professional maintenance visit includes, the checks you can do yourself between visits, and the signs that mean call now instead of waiting.
Read the GuideHeating · August 24, 2026
Eight signs a furnace is at the end of its life, the 50% rule for reading a repair estimate, a step-by-step repair-or-replace walkthrough, and why Lancaster County homeowners should decide before heating season starts.
Read the GuideCooling · August 24, 2026
The seven reasons a central air conditioner runs but blows warm air, six checks you can do safely in about ten minutes, and the symptoms that mean it is time to call for a diagnostic visit.
Read the GuideCooling · June 30, 2026
A spring prep checklist for Lancaster County homeowners: change the filter, clear the outdoor unit, check the thermostat and condensate drain, and know the warning signs that mean it is time for a professional tune-up.
Read the GuideHeating · June 30, 2026
How boilers and furnaces heat your home differently, the comfort and efficiency trade-offs between radiant heat and forced air, and how to choose for an older Pennsylvania home.
Read the GuideCooling · June 11, 2026
How long central AC systems usually last, the warning signs that a unit is near the end, how to weigh a repair bill against replacement, and what SEER2 ratings and the R-22 phase-out mean for older systems.
Read the Guide
© Red Barn Media Group 2026
