Every fall it happens the same way. The first truly cold night arrives, thermostats click on across Greater Boston, and the systems that skipped their annual service are the ones that don't start. By morning, residents are calling, HVAC vendors are booked for days, and owners are paying emergency rates for problems that a routine October visit would likely have caught.
Heat in a Massachusetts rental is more than a comfort issue. It's a legal requirement with specific dates and temperatures, and it's one of the fastest ways to lose a good resident's trust. This post covers what the rules say, what happens when heat fails, and a simple October checklist to keep your property off the emergency list.
This post is general information for property owners, not legal advice. For questions about a specific situation, talk to your own PM.
The heating season and the temperature rules
Massachusetts sets minimum housing standards in the State Sanitary Code, 105 CMR 410 (mass.gov). The code was rewritten in 2023, effective May 12, 2023, and one change catches many owners: heating season now ends May 31, not June 15 as it used to.
During heating season, which runs from September 15 through May 31, the code requires the following. A local board of health may shift those dates slightly, starting the season as late as September 30 or ending it as early as May 15, and posts any change on the town's website.
- Daytime: habitable rooms, bathrooms and toilet rooms must be heated to at least 68°F between 7:00 a.m. and 11:00 p.m.
- Overnight: those rooms must be heated to at least 64°F between 11:01 p.m. and 6:59 a.m.
- Upper limit: the heating system may not push any room above 78°F during heating season.
The heat has to come from a real heating system. Under the 2023 code, a fireplace, a wood or pellet stove, or a portable electric space heater does not count as the required heating system. Space heaters can be a short-term stopgap during a repair, but they are not the fix.
In practice, the heating system has to keep up on the coldest nights of the year, not just mild ones. A system that struggles in October rarely improves by January.
Who pays for the heat, and who maintains the system
Under the code, the owner must provide a heating system and keep it in good operating condition. The fuel is a separate question. The owner provides it unless a written rental agreement says the resident pays. A verbal agreement is not enough.
That makes the lease worth a fresh look before winter. If residents pay for gas, oil or electric heat, the lease should say so clearly, and the metering should match what it says. If you pay for the fuel, you need a delivery plan so an oil tank never runs dry during a cold snap.
Even when residents pay for fuel, maintaining the equipment stays with the owner. Annual servicing, repairs and replacements are part of owning a rental in Massachusetts.
What happens when the heat goes out
A resident without adequate heat has options. They can contact their local board of health or inspectional services department to request an inspection. In Boston that is Inspectional Services, with 311 available after hours (boston.gov). Under the code, failure to provide heat is listed as a condition that may endanger or materially impair health or safety. When an inspection confirms it, the board of health orders the owner to make a good-faith effort to correct it within 24 hours.
Massachusetts law also gives residents certain legal remedies when serious code violations aren't fixed, such as repair-and-deduct in some situations. For owners, the takeaway is simple: a no-heat call is never a "next week" repair. The legal timeline, the resident's comfort and the risk of frozen pipes all point the same way.
Why no-heat calls happen (and why most are preventable)
Very few no-heat calls come from a system failing without warning. Most trace back to a handful of familiar causes:
- No annual service. Worn igniters, dirty burners and failing parts usually give warning signs that a technician would catch.
- Clogged filters. A dirty filter can make a system overheat and shut itself off.
- Thermostat problems. Dead batteries and wrong settings cause a surprising share of calls.
- Blocked vents. Snow or debris over exhaust and intake vents can shut a high-efficiency system down, and can be a safety hazard.
- Fuel running out. Oil and propane deliveries that weren't scheduled ahead of a cold stretch.
- Frozen pipes. Unheated basements, crawl spaces and exterior walls let pipes freeze, which can affect both heat and water.
Each of these is cheaper to prevent in October than to fix at 2 a.m. in January.
Safety items that go with heat
Heating season is also the time to check life-safety equipment. Massachusetts requires working smoke alarms. Nicole's Law requires carbon monoxide alarms in homes with fossil-fuel equipment (such as gas or oil heat) or an attached garage, on every level of the home, and requires landlords to install and maintain them in every unit with a CO source (mass.gov). Test them, replace batteries, and make sure nothing has been removed or covered. CO alarms also wear out, typically after 5–7 years depending on the model, so check the dates. Fire Prevention Week each October is a good reminder to do this.
Residents should also know what to do if they smell gas: leave the building right away, then call 911 or the gas company from outside.
What owners should do: an October checklist
- Book a professional heating service now. October appointments are easier to get than December ones, and a technician can flag parts before they fail.
- Review your lease language on heat and utilities. Confirm the written agreement matches how the property is metered and who pays for what.
- Plan fuel deliveries. For oil or propane, set up automatic delivery or a clear refill schedule.
- Test smoke and CO alarms. Replace batteries and document the test.
- Protect pipes and vents. Insulate exposed pipes, seal drafts in unheated areas, and plan to keep exhaust vents clear of snow.
- Line up your vendors before the cold snap. Know who you'll call after hours, and confirm they'll take the call.
- Tell residents how to report problems. Routine issues go through a work order with photos; a true emergency gets a phone call.
That last step matters more than it seems. Clear reporting rules mean real emergencies reach the right person quickly, and routine requests don't get lost.
How it works at MPM: residents submit routine maintenance requests through Property Meld, with photos, and we handle them during regular office hours. For true emergencies, such as no heat in cold weather, an active leak or an electrical hazard, residents call us. In any situation involving fire, gas or immediate danger to anyone's safety, residents call 911 first.
Preventive maintenance is also how we keep costs predictable for owners. Nearly 70% of income-producing properties spend under 5% of rental income on repairs/maintenance; portfolio median ~2%.
Bottom line
Heat in a Massachusetts rental is a legal duty with clear dates and temperatures, and a no-heat call is one of the quickest ways to damage a good resident relationship. The fix is rarely complicated: service the system, check the lease, plan the fuel, test the alarms, and set clear reporting rules before the first cold night.
Want a property that's ready for winter without the stress?
Book a free consultation:
https://calendly.com/scott-martinhomemanagement/real-estate-investors-pm-services
Or call: 617.957.0166