The 15 Steps in Order
Run between mid-October and mid-November in MA. First hard freeze in Greater Boston: typically November 5-15.
Total time: PT5H
- Step 01
Disconnect garden hoses + drain
Detach all hoses from outdoor faucets. Drain by stretching hoses downhill or coiling. Store in garage or basement (UV exposure damages hoses left outside). - Step 02
Shut off outdoor hose bibs from interior valve
Most MA homes have an interior shutoff valve for each exterior hose bib (typically in basement near the wall penetration). Close the interior valve, then open the exterior bib to drain residual water. This is the single most important step — frozen hose bibs cause $400-$1,800 in repair + sometimes interior wall water damage. - Step 03
Winterize irrigation system + backflow preventer
Drain all underground irrigation lines (compressed air blow-out is standard method). Winterize the backflow preventer per manufacturer instructions. DIY-able if you have a 50+ CFM compressor; otherwise irrigation contractors charge $80-$180 for the service. Critical: backflow preventer freeze damage averages $800-$2,800 in spring. - Step 04
Clean gutters + downspouts
Remove leaves, sticks, debris from all gutters. Flush downspouts with hose to confirm flow. Standing water in gutters freezes, expands, damages gutter brackets and creates ice dam conditions at eaves. Pro Build offers gutter cleaning service ($180-$420 per typical home) for homeowners who don't want to ladder-walk. - Step 05
Cover or remove window AC units
Window-installed AC units leak cold air all winter and rust through if not protected. Best: remove and store in basement. Second-best: insulated cover (canvas or foam). Avoid plastic-bag wraps that trap moisture and accelerate corrosion. - Step 06
Cover or shield outdoor AC condenser unit
Central AC outdoor condensers benefit from a top cover (prevents leaves/debris in fan blades) but should NOT be fully wrapped (traps moisture). For heat pumps: do NOT cover — the unit operates year-round in heating mode. Use a top-only cover or leave uncovered. - Step 07
Inspect deck for damaged boards + railing
Walk the deck. Probe joists from below for rot. Tighten loose railing posts. Replace cracked deck boards before snow load weakens them further. Stain or seal cedar/PT decks if last sealed > 2 years ago. Composite/PVC decks: just clean with deck wash. - Step 08
Trim trees + shrubs near house
Branches within 6-10 feet of the house roof = ice + snow load risk. Branches over driveways = falling-on-car risk. Trim deciduous trees in late fall (after leaf drop, before deep snow). Schedule professional arborist for branches over 4 inches diameter or near power lines. - Step 09
Clean fireplace chimney + check damper
Schedule annual chimney inspection (CSIA-certified sweep) if you'll use the fireplace this winter. Cost: $180-$420. Tight-fitting damper prevents 5-10% of heating loss when fireplace is unused. Glass doors add another layer of energy savings. - Step 10
Stake driveway + walkway edges (snow plow guides)
Drive metal or fiberglass stakes (Home Depot, $1-$3 each) along the edges of driveway and walkways. Marks the edge for snow plow operators in deep snow. Saves $400-$1,200 in spring landscape repair from plow damage. - Step 11
Inspect snow blower + service if needed
Pull-start, run for 5 minutes. If hard to start, schedule service NOW (October-November) — by December the wait is 2-4 weeks. Annual service: $80-$180 for tune-up. Replace shear pins ($5-$10 set) preventively. - Step 12
Stock ice melt + sand
Calcium chloride or magnesium chloride is best for MA freeze (rock salt fails below 15°F). Stock 2-3 bags before December. Sand for traction in extreme cold (-10°F+) where any chemical fails. Storage location: garage shelf, easy access from front door. - Step 13
Service exterior light fixtures + bulbs
Replace any burned-out exterior bulbs while ladder weather is still good. Switch to LED if not already (lasts longer, uses 80% less energy, doesn't fail in cold). Verify motion sensors on security lights. - Step 14
Bring in or cover patio furniture, grills, planters
Patio furniture: store in garage or use weatherproof covers. Grill: deep-clean, cover, or store. Planters with terracotta or ceramic: bring inside or empty (freeze-thaw cracks them). Concrete planters: stay outside fine. - Step 15
Inspect attic + crawl space ventilation NOW
Verify soffit vents and ridge vents are clear of debris. Blocked attic vents trap moisture in winter (causes ice dam conditions + roof deck rot). Pro Build can inspect during gutter service or roof maintenance visit.
Frequently Asked Questions
When should I winterize my Massachusetts yard?
Mid-October to mid-November. First hard freeze (sustained sub-32°F overnight) in Greater Boston: typically November 5-15. Winterize 1-2 weeks BEFORE the first freeze to be safe. Cape Cod and South Coast can wait 1-2 weeks later; Western MA hill towns should winterize 1-2 weeks earlier.
Can I leave my outdoor hose bibs alone if I have frost-free spigots?
Frost-free hose bibs (Woodford, Mansfield) extend the shutoff valve into the heated wall cavity, theoretically eliminating the freeze risk. BUT — if any hose is left attached, the back-flow blocks proper draining and frost-free fails. Best practice: detach hoses regardless of spigot type. Frost-free spigots installed before 2000 may be partially failed; test by listening for water hammer when shutting off.
How much does professional yard winterization cost in MA?
Full-service winterization (gutter cleaning + irrigation winterize + leaf removal + tree trim): $480-$1,400 depending on property size. À la carte: gutter cleaning $180-$420, irrigation blow-out $80-$180, leaf cleanup $120-$320, tree trim per arborist quote.
What ice melt is safest for plants and concrete?
Calcium chloride: works to -25°F, less plant-toxic than rock salt, but corrosive to metal and aggressive on new concrete. Magnesium chloride: works to -13°F, gentler on plants, less corrosive. Calcium magnesium acetate (CMA): most plant-safe, lowest concrete impact, but expensive ($40-$60 per 50-lb bag). For driveways with new concrete, use sand for first winter; chemicals after concrete cures.
Should I cover my heat pump in winter?
No. Heat pumps operate year-round in heating mode and need clear airflow around the outdoor unit. Covering = blocking heat exchange = system trips on overpressure. Top-only cover acceptable to deflect snow/ice load; full wrap is harmful.
What's the typical first frost date in Greater Boston?
First frost (any sub-32°F): typically October 5-15. First hard freeze (sustained sub-25°F): November 5-15. First heavy snow: late November or December. Western MA hill towns (Berkshires, Pioneer Valley): 2-3 weeks earlier on all dates.
Can I postpone irrigation winterization?
Risky. Backflow preventer freeze damage is the most expensive yard winterization mistake — average $800-$2,800 in spring repair. Irrigation contractors book up by mid-November; book by October if you're using a service. Last possible date: a few days before first hard freeze.
What about wrapping outdoor pipes that aren't fully shut off?
Heat tape (UL-listed, self-regulating) on any pipe that can't be drained — pool plumbing, well pump line, hose-bib lines that lack interior shutoff. Cost: $80-$140 per run. Plus foam pipe insulation over the heat tape. Run on GFCI outlet.
References & Sources
- U.S. Department of Energy — Winter weatherization tips. https://www.energy.gov/energysaver/services/weatherize
- Massachusetts winter climate data. https://www.weather.gov/box/
- Insurance Information Institute — Winter weather safety. https://www.iii.org/article/spotlight-on-winter-storms
