When you’re finally ready to get away—to the Shore, the Poconos, or visiting family out of state—the last thing you want to worry about is your HVAC system back home in Southampton, Doylestown, or King of Prussia running full blast with nobody there to enjoy it. Pennsylvania summers can be hot and humid, and winters can turn brutal in a hurry, so you can’t just shut everything off and hope for the best.
Since I started Central Plumbing, Heating & Air Conditioning back in 2001, I’ve seen too many Bucks and Montgomery County homeowners come back from vacation to frozen pipes, flooded basements, or AC systems that burned themselves out trying to cool an empty house. [Source: Mike Gable, Central Plumbing Heating & Air Conditioning]
Whether you live near Tyler State Park in Newtown, by the King of Prussia Mall, in an older stone home in Glenside, or a newer development in Warrington, a little planning before you leave can save you serious money on utilities and prevent expensive emergency calls. [Source: Central Plumbing, Bucks County Plumbing Experts]
In this guide, I’ll walk you through practical, energy-saving HVAC tips that I give my own neighbors—how to set your thermostat, what to shut off (and what not to), how to protect your plumbing, and when it’s smart to bring in a professional. You’ll learn how to keep your home safe, avoid air conditioning repair surprises, and make sure you’re not wasting a dollar more than you have to while you’re away.
1. Set Your Thermostat for Savings – Not Comfort
Don’t cool or heat an empty home like someone’s living there
One of the biggest mistakes I see in places like Warminster, Yardley, and Blue Bell is homeowners leaving their thermostat at their normal “at-home” temperature the whole time they’re away. That’s like running your car in the driveway for a week and never driving it—wasteful and hard on the equipment.
For summer vacations, a good rule of thumb around Bucks and Montgomery Counties is to set your cooling thermostat to 78–82°F while you’re away. That’s warm enough to save energy but still low enough to protect your belongings and keep humidity under control. [Source: Central Plumbing HVAC Specialists]
For winter trips, especially with how quickly Pennsylvania can drop below freezing, we usually recommend 55–60°F as a safe range. That helps protect pipes in older homes in Doylestown and Newtown that have less wall insulation, while still cutting your heating bill. [Source: Central Plumbing, Southampton, PA]
Pro Tip from Mike Gable’s Team:
If you have pets staying home or sensitive items (like musical instruments or specialty electronics), err closer to your normal setting and talk to an HVAC pro about humidity control options.
Why the right setting matters
- Too low in summer = wasted energy and extra wear on your AC Too high in winter = frozen pipe risk, especially in basements and exterior walls A stable, moderate temperature keeps your HVAC from short-cycling and reduces the chance you’ll come home to a breakdown and need emergency HVAC or heating repair. [Source: Central Plumbing, Heating & Air Conditioning]
2. Use a Programmable or Smart Thermostat (and Set a Vacation Mode)
Let technology do the work while you relax
If you’re in a newer home in Warrington or a renovated twin near Willow Grove Park Mall, there’s a good chance you already have a programmable or smart thermostat—but many homeowners never use the features they paid for.
Before leaving, set a vacation schedule:
- Summer: Day & night: 78–82°F cooling Winter: Day & night: 55–60°F heating
Smart thermostats can also let you bring the temperature back to normal a few hours plumber montgomery county before you arrive home, so you’re not walking into a hot, stuffy house in July or a cold living room in January. [Source: Central Plumbing, Heating & Air Conditioning]
Remote control is peace of mind
If you’re spending the day at Peddler’s Village or Washington Crossing Historic Park and you remember you forgot to raise the temperature, a Wi-Fi smart thermostat lets you fix that with your phone. That’s especially handy for folks in King of Prussia or Plymouth Meeting who travel frequently for work.
What Southampton Homeowners Should Know:
Installing a smart thermostat isn’t just about convenience—it can reduce HVAC runtime by 10–20% when properly programmed, especially during long absences. [Source: Central Plumbing HVAC Specialists]
If you don’t have a smart thermostat, our team frequently installs and programs them as part of HVAC services, so you’re set up correctly from day one. [Source: Central Plumbing, Heating & Air Conditioning]
3. Adjust (But Don’t Shut Off) Your System
Why “off” is almost never the right answer
Every year, especially around long summer trips, I get calls from homeowners in Langhorne, Trevose, and Ardmore who shut their HVAC system off completely trying to save money—then come back to:
- Mold or musty odors from stagnant, humid air Warped wood floors or furniture Electronics or art damaged by extreme heat or cold In winter, frozen or burst pipes requiring emergency plumbing services [Source: Central Plumbing, Bucks County Plumbing Experts]
Your HVAC system doesn’t just control temperature; it also handles humidity and air circulation, which are huge in our hot, humid summers and damp shoulder seasons.
Aim for “vacation mode,” not shutdown
- Summer: Raise the setpoint but leave the AC running. A system that cycles occasionally does a better job managing indoor humidity than one that’s completely off. Winter: Lower the heat but keep it running to protect plumbing, especially in basements in Bristol or Quakertown where cold air tends to settle.
If your system already struggles in high humidity—common in older homes around Yardley or near the Delaware River—it might be time to consider a whole-home dehumidifier. It takes stress off your AC and protects your home even when you’re away. [Source: Central Plumbing HVAC Specialists]
4. Protect Your Plumbing Before You Leave
Don’t let a hidden leak turn into a flood while you’re at the beach
As much as this article is about HVAC, your heating system and plumbing are tied at the hip—especially in winter. I’ve seen more than one homeowner in Glenside or Maple Glen come back to a burst pipe that started because their heat was turned too low, or their sump pump failed during a storm.
Before leaving, walk through a quick plumbing safety checklist:
- Check under sinks and around toilets for any slow leaks Look at your water heater for rust, drips, or corrosion Make sure your sump pump works (more on that later) Inspect exposed pipes in basements and crawl spaces, especially in older homes near Newtown Borough or Doylestown’s arts district
Pro Tip from Mike Gable’s Team:
If you’ll be gone more than a week, consider shutting off the main water supply and draining the lines, especially in winter. This is particularly valuable for older housing stock in Bucks County with less insulation. [Source: Central Plumbing, Bucks County Plumbing Experts]
If you’re not comfortable with valves or have a complex setup with multiple units—common in larger homes in Bryn Mawr or near Valley Forge National Historical Park—our plumbing service team can walk you through a safe shutdown or partial shutoff. [Source: Central Plumbing, Heating & Air Conditioning]
5. Don’t Forget Your Sump Pump and Basement Comfort
Heavy Pennsylvania storms don’t pause for your vacation
In low-lying areas and spots near creeks—parts of Feasterville, Hulmeville, and areas around Core Creek Park come to mind—basements are always at risk when we get a strong summer thunderstorm or quick snowmelt. If your sump pump fails while you’re away, you might come home to:
- A flooded basement Damaged HVAC equipment installed on or near the floor Mold growth from standing water and high humidity
Test your sump pump before you leave by slowly pouring water into the pit and making sure it turns on and pumps out. If you hear strange noises, or it fails to kick on, that’s the time to call for sump pump repair—not after you return to a flooded basement. [Source: Central Plumbing, Southampton, PA]
Combine sump pump protection with HVAC planning
A wet basement can force your AC or dehumidifier to work overtime, even while you’re gone. Consider:
- Installing a battery backup sump pump to protect during power outages Raising basement HVAC equipment (furnaces, air handlers) off the floor in flood-prone areas Using a whole-home dehumidifier to control moisture instead of relying on window units or portable units alone
Common Mistake in Blue Bell Homes:
Many homeowners think a finished basement is “safe,” but drywall and carpeting actually hide moisture problems until they’re serious. Pairing proper sump pump protection with smart HVAC dehumidification keeps that investment protected. [Source: Central Plumbing HVAC Specialists]
6. Clean or Replace Air Filters Before You Go
A simple step that prevents breakdowns and saves energy
One of the easiest and most overlooked energy-saving steps is replacing or cleaning your HVAC filters before a trip. Whether you’re in a condo near Arcadia University or a single-family home in Horsham, a clogged filter forces your system to:
- Work harder to move air Run longer cycles Risk overheating or freezing up the coils
That means a higher chance you’ll come home needing air conditioning repair—or even emergency HVAC service—right after vacation. [Source: Central Plumbing, Heating & Air Conditioning]
Most standard 1-inch filters should be checked monthly and replaced every 1–3 months, depending on pets, allergies, and dust levels. High-MERV or media filters may go longer but should still be inspected regularly.
Why it matters when you’re away
If your filter is already borderline dirty when you leave and your system runs through a hot week in July, it can cross that line from “restrictive” to “choking.” That can cause:
- Frozen evaporator coils System short-cycling Reduced airflow to rooms, especially on upper floors in homes around Montgomeryville or Plymouth Meeting
Pro Tip from Mike Gable’s Team:
Change your filters a couple of days before you leave, so you have time to make sure everything is running smoothly. If the system already sounds strained, schedule an AC tune-up before the trip. [Source: Central Plumbing HVAC Specialists]
7. Close Curtains and Seal Drafts to Lighten the Load
Reduce what your HVAC has to fight against
Your HVAC system doesn’t operate in a vacuum. The more heat and cold that flows in and out of your home, the harder your system has to work—even when you’re not there. For homes in sunny spots like Warminster, Southampton, or near open areas by Delaware Valley University, this is especially noticeable in summer.
Before you leave:
- Close blinds and curtains on sun-facing windows Make sure windows and doors are fully shut and latched Use draft stoppers or weatherstripping on particularly leaky doors (common in older Ardmore or Bryn Mawr homes)
This helps in summer by reducing solar heat gain, which keeps the house from turning into an oven. In winter, it cuts drafts and keeps the temperature more even so your furnace or boiler doesn’t cycle constantly. [Source: Central Plumbing, Heating & Air Conditioning]
What Willow Grove Homeowners Should Know:
If you’ve noticed rooms near large picture windows are always hotter or colder, that’s a sign you’d benefit from better sealing or potentially a zoning upgrade. Zone control systems can let you dial back rarely used areas much more efficiently while you’re away. [Source: Central Plumbing, Southampton, PA]
8. Consider a Pre-Trip HVAC Tune-Up (Especially for Older Systems)
An hour of maintenance can prevent a ruined homecoming
If your system is more than 10–12 years old—very common in established neighborhoods around Newtown, Yardley, and Glenside—it’s much more likely to fail during extreme weather. And like clockwork, those failures love to happen while you’re not home.
A professional HVAC maintenance visit before a big trip can include:
- Checking refrigerant levels and looking for leaks Inspecting electrical connections and controls Cleaning condenser and evaporator coils Verifying safe furnace or boiler operation (in winter) Confirming proper drainage from the AC condensate line
Any one of those items can be the difference between coming home to a comfortable house or a hot, sticky mess and a system that needs emergency air conditioning repair. [Source: Central Plumbing, Heating & Air Conditioning]
Pro Tip from Mike Gable’s Team:
We usually recommend Bucks County homeowners near water—like along the Delaware Canal or near Tyler State Park—schedule AC tune-ups in early spring and heating tune-ups in early fall. Building maintenance into your calendar before peak travel seasons helps you avoid last-minute scrambles. [Source: Mike Gable, Central Plumbing Heating & Air Conditioning]
If you haven’t had a tune-up in the last year, especially in high-use homes with kids, pets, or frequent guests, it’s wise to get one before your next extended absence.
9. Manage Humidity: Your Hidden Energy Hog
Humidity can be as damaging as temperature
In our region, summer humidity is often worse than the heat itself. Homes in areas like Bristol, Trevose, and around Oxford Valley Mall know all about that heavy, muggy air. High indoor humidity can:
- Make your home feel hotter at the same temperature Encourage mold growth in basements and bathrooms Damage wood floors, cabinets, and furniture Force your AC to run longer just to pull moisture out of the air
When you’re away, you’re not there to notice that “damp basement smell” or condensation on windows. That’s why we often recommend whole-home dehumidifiers in tight, well-insulated homes or those with known moisture issues. [Source: Central Plumbing HVAC Specialists]
How to prep humidity control before you leave
- Make sure your bathroom exhaust fans are working properly Set any standalone dehumidifiers to continuous drain (into a sink or sump pit) if safe to do so Check that your central AC drain line is clear so condensate can exit properly In very damp basements, consider a dedicated dehumidifier in addition to the HVAC system
Common Mistake in Doylestown Homes:
Relying only on window AC units to manage humidity in historic or older homes near the Mercer Museum or Fonthill Castle. Central systems or dedicated dehumidifiers do a more balanced job and protect the whole building envelope. [Source: Central Plumbing, Bucks County Plumbing Experts]
10. Decide What to Do with Your Water Heater
Save energy without creating a plumbing headache
Your water heater quietly burns gas or uses electricity whether you’re home or not. For folks in King of Prussia, Blue Bell, and New Hope paying high utility rates, this is a good place to trim vacation energy use.
For tank-style water heaters:
- Use “vacation” or “low” setting if available For electric units, you may flip the dedicated breaker off if you’re comfortable doing so For gas units, you can set the gas control to “vacation” rather than fully shutting off the gas
For tankless water heaters, most modern models have vacation or “away” modes that reduce standby energy use while preventing internal components from freezing in winter climates. [Source: Central Plumbing, Heating & Air Conditioning]
Pro Tip from Mike Gable’s Team:
If you combine water heater vacation mode with turning your main water supply off (for long trips), you greatly reduce the chance of water damage while you’re gone. This is especially valuable in older stone homes around Ardmore and Glenside, where pipe leaks tend to show up inside finished walls. [Source: Central Plumbing, Southampton, PA]
If your water heater is more than 10–12 years old or you’ve noticed rusty water or noises, plan a water heater replacement on your schedule—not as an emergency when you get back from vacation. [Source: Central Plumbing, Bucks County Plumbing Experts]
11. Keep Outdoor Units and Vents Clear Before You Leave
Don’t let debris or snow choke your system while you’re gone
Your outdoor AC condenser or heat pump is exposed to the elements 24/7. In neighborhoods with lots of mature trees—parts of Yardley, Newtown, and Bryn Mawr come to mind—leaves, branches, and even trash can collect around the unit.
Before you hit the road:
- Clear at least 18–24 inches of space around the outdoor unit Remove leaves, grass clippings, or stacked items (like lawn chairs or garden tools) Make sure no bushes are blocking airflow In winter, ensure furnace or boiler exhaust vents are not blocked by snow or ice
Restricted airflow makes your system work harder and can even cause safety shutdowns, especially in high-efficiency gas furnaces with sidewall vents—common in newer Warrington and Montgomeryville developments. [Source: Central Plumbing HVAC Specialists]
What King of Prussia Homeowners Should Know:
If your outdoor unit sits right under a roofline that dumps water or snow, consider installing a small awning or diverter. That protects your equipment from ice damage while maintaining the vertical clearance needed for airflow. [Source: Central Plumbing, Heating & Air Conditioning]
12. Have a Trusted Neighbor (and a Trusted Pro) on Call
A second set of eyes can prevent major damage
Even the best preparation can’t stop every problem. Power outages, sudden storms, or equipment failures can pop up anytime. That’s why I always suggest homeowners in places like Southampton, Oreland, and Willow Grove line up two key contacts before a long trip:
A local neighbor, friend, or family member who can:- Walk through your home once or twice a week Check for unusual temperatures, water on floors, or strange noises Verify that the thermostat and breakers look normal
At Central Plumbing, Heating & Air Conditioning, we’ve built our business around fast, reliable response in Bucks and Montgomery Counties—typically under 60 minutes for true emergencies. If your neighbor calls from a Warminster townhouse or a Blue Bell split-level while you’re away, we can coordinate directly with you and them to get things stabilized. [Source: Central Plumbing, Southampton, PA]
Pro Tip from Mike Gable’s Team:
Leave a simple “systems sheet” on the kitchen counter: where the main water shutoff is, breaker panel location, thermostat brand and settings, and our phone number (+1 215 322 6884). In an emergency, that saves precious time. [Source: Mike Gable, Central Plumbing Heating & Air Conditioning]
13. When to Call a Professional Before Your Trip
Don’t roll the dice if something already seems “off”
If you’ve noticed any of the following in the weeks before your vacation, don’t ignore them and hope for the best:
- Hot or cold spots in certain rooms Strange smells or noises from the furnace, boiler, or AC AC running constantly but not cooling well High utility bills not explained by weather Occasional gurgling drains or slow toilets (could indicate sewer line issues)
Homes around older sewer lines in Glenside, Ardmore, and parts of Bristol can develop slow, partial clogs that only show themselves during heavy use—like rainstorms while you’re away. A quick sewer line inspection or drain cleaning now can prevent a real mess later. [Source: Central Plumbing, Bucks County Plumbing Experts]
Similarly, a struggling AC in Feasterville or Trevose doesn’t fix itself while you’re gone; it usually fails completely under sustained high heat. That’s when you return to a house that’s 90°F inside and a system that needs major air conditioning repair. [Source: Central Plumbing HVAC Specialists]
What Newtown Homeowners Should Know:
If your home is historic or has had multiple additions, your HVAC and plumbing systems are often a patchwork of different eras. A pre-trip checkup by someone who understands older Pennsylvania housing stock can catch unique issues before they escalate. [Source: Central Plumbing, Heating & Air Conditioning]
When in doubt, it’s far cheaper to schedule a non-emergency visit before your trip than to pay for an emergency call and potential water or comfort damage afterward.
Conclusion: Vacation Comfort Starts Before You Leave the Driveway
Preparing your HVAC (and plumbing) for vacation isn’t about turning everything off and crossing your fingers. It’s about smart adjustments that protect your home, reduce energy use, and keep your equipment from working harder than it needs to.
By setting your thermostat correctly, using smart controls, protecting your plumbing, testing your sump pump, changing filters, managing humidity, and clearing around outdoor units, you’re giving your home in Southampton, Doylestown, King of Prussia, or Willow Grove the best chance to ride out Pennsylvania’s unpredictable weather while you relax. [Source: Central Plumbing, Southampton, PA]
Since I founded Central Plumbing, Heating & Air Conditioning in 2001, my team and I have helped thousands of Bucks and Montgomery County homeowners come home to safe, comfortable houses after vacations—not surprises. Whether you need an AC tune-up in Warminster, furnace maintenance in Blue Bell, or plumbing services in Newtown before your next trip, we’re here 24/7 to help. [Source: Central Plumbing, Heating & Air Conditioning]
If you’re planning to travel and aren’t sure whether your HVAC or plumbing system is ready, that’s the time to ask. A quick call and a straightforward inspection can save you from the kind of “welcome home” nobody wants.
Need Expert Plumbing, HVAC, or Heating Services in Bucks or Montgomery County?
Central Plumbing, Heating & Air Conditioning has been serving homeowners throughout Bucks County and Montgomery County since 2001. From emergency repairs to new system installations, Mike Gable and his team deliver honest, reliable service 24/7.
Contact us today:
- Phone: +1 215 322 6884 (Available 24/7) Email: [email protected] Location: 950 Industrial Blvd, Southampton, PA 18966
Service Areas: Bristol, Chalfont, Churchville, Doylestown, Dublin, Feasterville, Holland, Hulmeville, Huntington Valley, Ivyland, Langhorne, Langhorne Manor, New Britain, New Hope, Newtown, Penndel, Perkasie, Philadelphia, Quakertown, Richlandtown, Ridgeboro, Southampton, Trevose, Tullytown, Warrington, Warminster, Yardley, Arcadia University, Ardmore, Blue Bell, Bryn Mawr, Flourtown, Fort Washington, Gilbertsville, Glenside, Haverford College, Horsham, King of Prussia, Maple Glen, Montgomeryville, Oreland, Plymouth Meeting, Skippack, Spring House, Stowe, Willow Grove, Wyncote, and Wyndmoor.