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Is Your Furnace One Cold Snap Away From a Legal Deadline?
A tenant's text arrives before sunrise: the furnace quit overnight, the thermostat reads in the 50s, and the forecast calls for single digits. In Colorado, that message does more than start your morning. It can start a legal clock.
Under the state's warranty of habitability, a heating failure during the cold months is treated as an emergency, and the response window is measured in hours, not days. This guide breaks down what Colorado law requires when the heat goes out, what tenants can do if repairs stall, and how to build a winter plan that keeps you compliant.
At My Haven Group, our team brings 31+ years of combined experience to Denver property management across the metro, and no-heat calls are among the most time-sensitive situations we handle.
Key Takeaways
- 24 hours to act: A loss of heat between October and April is presumed to endanger a tenant's life, health, or safety, so you must begin remedial action within 24 hours of notice.
- Seven days to finish: For emergency conditions like no heat, a reasonable time to complete the repair is presumed to be seven days.
- Notice is broad: Emails, maintenance-portal requests, and even your own written records can count as notice under the 2024 law.
- Hotel duty is real: If a tenant requests it, you must provide a comparable unit or hotel room while a life-safety condition is being fixed.
- Preparation is protection: Fall HVAC service, a 24/7 response line, and thorough records are your best defense against claims.
Why Losing Heat Is a Legal Emergency in Colorado
Colorado doesn't treat a broken furnace like a routine work order during the cold season.
The Law Behind the Clock
Colorado's warranty of habitability lives in C.R.S. §§ 38-12-501 through 38-12-512, and it was overhauled by Senate Bill 24-094, "Safe Housing for Residential Tenants". Governor Polis signed the bill on May 3, 2024, and it took effect immediately.
The core promise is simple: every lease includes a warranty that your rental is fit to live in, from move-in through the entire tenancy.
Why October Through April Matters
Under C.R.S. § 38-12-505, certain conditions are presumed to materially interfere with a tenant's life, health, or safety. A lack of heat between October and April is on that list, alongside hazards like gas leaks.
That presumption moves a heating failure into the fastest response tier.
How the 24-Hour and Seven-Day Timelines Work
The 2024 law sets two separate deadlines: one to start the repair, and one to finish it.
What Counts as Remedial Action
Under C.R.S. § 38-12-503, you must begin remedial action within 24 hours of receiving notice of a life-safety condition. For less urgent habitability problems, the window is 72 hours.
Remedial action doesn't mean the furnace must be running within a day. The statute defines it as timely, good-faith efforts to repair the condition and to reduce its negative effects. Dispatching a qualified HVAC technician, supplying safe temporary heat, and keeping the tenant informed all help show you're acting.
One more detail for gas furnaces: if the problem involves gas piping or gas appliances, the statute requires you to hire a qualified professional.
When the Seven-Day Window Can Stretch
For emergency conditions like no heat, a complete fix is presumed reasonable within seven days; for ordinary conditions, it's 14 days.
Those presumptions can be rebutted if circumstances outside your control caused the delay, such as a back-ordered part or a tenant unreasonably denying access. Document those obstacles as they happen, because you'll need proof later.
What Counts as Notice Under Colorado Law
The clock starts when you have notice, and SB 24-094 widened that definition considerably.
Written Notice Is Broader Than You Think
The 2024 law loosened the old, strict notice standard: you're considered on notice if any writing gives you a basis to substantially know the condition exists or may exist.
That can include an email, a portal request, written messages with your maintenance staff, a third party's written report, or even your own written observations.
Your Lease Can Change the Rules
If your lease or property rules direct tenants to report emergencies by phone, you may have waived your right to written notice. In that case, a phone call alone can start the 24-hour clock.
Leases formed on or after January 1, 2025, must also include certain habitability disclosures, so review your lease template.
When You Must Provide a Hotel or Comparable Unit
If repairs will take time, the law may require you to house your tenant elsewhere at your expense.
For conditions that materially interfere with life, health, or safety, C.R.S. § 38-12-503(4) requires you, at the tenant's request, to provide a comparable dwelling unit or hotel room. The substitute must be habitable, accessible if the tenant has a disability, and within five miles of the rental unless the tenant agrees to something farther.
Before winter, check what your landlord insurance policy does and doesn't cover for situations like this.
A furnace failure in January isn't a maintenance ticket. It's a legal deadline with a thermometer attached.
What Tenants Can Do If Repairs Stall
Understanding a tenant's options shows exactly what's at stake when a fix drags on.
If you breach the warranty, C.R.S. § 38-12-507 gives tenants several remedies:
- End the lease: Tenants can terminate without penalty by giving 10 to 60 days' written notice while the condition remains unrepaired.
- Repair and deduct: When specific conditions are met, tenants can pay for the repair and deduct the cost from rent.
- Seek damages: Tenants can sue or counterclaim for actual damages, including the reduced rental value of the unit while it was uninhabitable.
- Defend an eviction: A habitability breach can be raised as a defense in an eviction case.
Colorado law also prohibits retaliating against a tenant for reporting unsafe conditions, and the attorney general can enforce the warranty. The Colorado General Assembly's renters' rights summary offers a plain-language overview of these protections.
A Winter-Ready Game Plan for Denver Landlords
The landlords who handle no-heat calls best are the ones who prepared in September.
Before the First Freeze
Schedule professional furnace service each fall, replace filters, and test carbon monoxide detectors. Our fall rental property inspection checklist walks through the full list.
Confirm you have an HVAC vendor who answers after hours, and keep safety-certified space heaters on hand for temporary relief.
When the Call Comes In
Acknowledge the report right away, log the time you received it, and dispatch a technician within the 24-hour window. Tell the tenant what's happening and when to expect updates.
If the repair can't be finished quickly, discuss temporary housing options before the tenant has to ask twice.
After the Repair
Keep every message, invoice, and timestamp. The 2024 law added record-keeping requirements, and solid photo documentation protects you in any later dispute.
Every timestamp you save during a cold-weather emergency becomes evidence that you did the right thing.
This is where professional maintenance services make a real difference. My Haven residents can submit work orders online or call our 24/7 hotline, and our vetted vendors work under negotiated pricing.
Frequently Asked Questions
Here are answers to the questions Denver landlords ask most about winter heat failures.
Do I have to fix the furnace completely within 24 hours?
No. You must begin remedial action within 24 hours, such as dispatching a qualified technician. A complete fix is presumed reasonable within seven days, though documented delays outside your control can extend that.
Does a phone call from my tenant count as notice?
It can. Colorado law accepts any writing that shows you know or may know about the problem, and if your lease or property rules allow verbal emergency reporting, a call alone may start the clock.
Do I really have to pay for a hotel?
If no heat makes the unit unsafe and the tenant requests it, you must provide a comparable unit or a hotel room within five miles, unless the tenant agrees otherwise.
Keep Your Tenants Warm and Your Investment Protected
A Denver winter will test every heating system eventually, and Colorado law expects you to be ready when it does.
Fast action, clear communication, and complete records keep your tenants safe and your rental out of legal trouble. With 24/7 maintenance support, vetted HVAC vendors, and our Happiness Guarantee on response times, My Haven Group helps owners meet every deadline.
Call us at 303-228-7800 or contact us to schedule a consultation with our Denver property management team.
