If you just bought a home in the south Denver metro area, what do you need to do right now to prepare for your first Colorado winter?
Start with your furnace, blow out your sprinkler system before the first hard freeze, and seal every draft you can find. These three actions alone can save you hundreds of dollars and prevent costly emergency repairs before spring.
Why Winter Prep in Greenwood Village Matters Right Now
If you closed on your home this year, congratulations. But here is something I tell every first-time buyer I work with in the south metro area: Colorado winter does not send you a polite warning. One day it is 70 degrees in October, and the next morning you wake up to single digits with ice on your windshield.
The Colorado Public Utilities Commission issued extreme cold preparedness guidance precisely because rapid temperature swings on the Front Range are a recurring and foreseeable risk. When you were renting, someone else worried about frozen pipes and furnace maintenance. Now that is your responsibility.
The good news? Most of these tasks are straightforward, and if you handle them in the next few weeks, you will save real money on energy bills and avoid the kind of emergency repair calls that nobody wants during the holidays. Let me walk you through the checklist I recommend to every new homeowner in the Greenwood Village, Centennial, and Lone Tree area.
Get Your Furnace Inspected and Your Filters Changed
This is the single most important thing you can do before winter hits the south Denver metro. If you have not already scheduled a professional furnace inspection, do it today. Ideally, this happens in September or October, so you are running out of time.
A technician will check the heat exchanger, igniter, and flue to confirm everything is operating safely. This is not just about comfort. A cracked heat exchanger can leak carbon monoxide into your home, which is a genuine life-safety issue.
Here is the easy part you can do yourself: change your furnace filter. The Colorado PUC advises changing the filter once a month during winter, noting this simple step can reduce heating costs by an estimated 5 to 15 percent according to their extreme weather preparedness guidance.
What does that actually mean for your wallet? If your monthly heating bill runs $200, you could be saving $10 to $30 a month just by swapping in a clean filter. Over a full winter season, that adds up.
Find Your Furnace Filter Slot Now
Many first-time homeowners do not even know where their furnace filter goes. I always recommend locating it before you need it. Check along the return air duct or on the furnace unit itself. Buy several filters at once so you have them ready for monthly swaps through March.
Blow Out Your Sprinkler System Before It Is Too Late
This is one of the most Colorado-specific tasks on the list, and it catches new homeowners off guard every single year. If your Greenwood Village home has an in-ground irrigation system, and many single-family homes in the south metro do, you need to have it blown out with compressed air before the first hard freeze.
Water left sitting in irrigation lines will freeze, expand, and crack the pipes. Come spring, you are looking at expensive repairs and potentially significant water damage to your landscaping and foundation areas.
In the Denver metro, blow-outs are typically done by mid-October. If you have not blown out your sprinklers yet, do it this week before the next hard freeze. If you are in the south metro area and would like a referral for sprinkler blow-out, I can recommend someone. That is the kind of local connection I keep for my clients because finding a reliable service provider on short notice in October can be a real headache.
Do not assume this was done by the previous owner or that your system is “already drained.” Confirm it. If you have not scheduled it yet, reach out to me and I will point you in the right direction.
Rake Leaves Before They Clog Gutters and Drains
The mature trees around Greenwood Village are gorgeous in October, and every one of those leaves eventually lands somewhere. Rake them up as they fall rather than saving it all for one big weekend cleanup. Wet, matted leaves block gutters and downspouts, and they pile up along patios, walkways, and the drainage routes that run through your hardscaping. When snow melts with nowhere to go, the water pools against your foundation or refreezes into ice on your walkways. A quick rake every week or two through November keeps water moving away from your home, where it belongs.
Dial In Your Thermostat and Water Heater Settings
Now let me walk you through two quick adjustments that cost you nothing but can meaningfully lower your utility bills this winter.
Thermostat Settings for Greenwood Village Winters
The Colorado PUC recommends setting your thermostat to 65 to 70 degrees Fahrenheit while you are home and dropping it to 58 degrees when you are away. If your home came with a programmable or smart thermostat, set up a schedule now so it handles the adjustment automatically.
If your home does not have a programmable thermostat, this is a relatively inexpensive upgrade that pays for itself quickly. You do not need to freeze. You just need to stop heating an empty house all day.
Water Heater Temperature
Check your water heater and set it to 120 degrees Fahrenheit. Lowering the temperature by just 10 degrees can save an estimated 3 to 5 percent on water heating costs. There is a good chance yours is wasting energy right now.
While you are at it, do you know where your main water shut-off valve is? Find it today. If a pipe ever freezes and bursts, knowing how to kill the water supply in 30 seconds instead of searching for it in a panic can be the difference between a minor inconvenience and a flooded basement.
Seal Drafts, Upgrade Insulation, and Use Your Windows Wisely
Colorado’s dry climate and intense sun create an interesting dynamic. Your south-facing windows can actually be your best friend for passive solar heating during the day. Open the blinds on south-facing windows to let that sunshine warm your rooms naturally, then close them at night to retain the warmth. This costs you absolutely nothing.
For active improvements, improving insulation in walls, crawl spaces, floors, and heating ducts can save up to an estimated 10 percent on monthly energy bills. That is a meaningful number, especially in your first year of ownership when every dollar counts.
Quick, Affordable Draft Fixes
You do not need to rip open walls. Start with these:
- Window sealing kits: Available at local home improvement stores and easy to install yourself. They create a clear plastic barrier that stops cold air infiltration.
- Door sweeps and weatherstripping: Check every exterior door. If you can see daylight under or around the edges, you are heating the outdoors.
- Outlet and switch plate insulators: Foam gaskets that sit behind your wall plates on exterior walls. They cost pennies and take seconds to install.
- Caulk around exterior penetrations: Check where pipes, wires, or vents pass through exterior walls. Seal any gaps.
As a Certified Senior Advisor, I work with many longtime owners and downsizers across the Cherry Creek School District and the broader south Denver metro, and I see a lot of homes in this area that were built in earlier decades. Weatherstripping on any home can degrade over time, and new owners often do not think to inspect it. A quick walk around your home with a candle or incense stick near windows and doors on a windy day will reveal exactly where drafts are getting in.
Carbon Monoxide Safety Is Not Optional
This one is critical, and it is not about saving money. It is about keeping your family safe. Installing carbon monoxide detectors in key areas of your home and testing batteries regularly is essential.
Greenwood Village homes with gas furnaces, fireplaces, or attached garages are particularly at risk during the heating season when windows stay closed for months. Carbon monoxide is odorless and colorless. You will not know it is there until symptoms appear: headache, dizziness, nausea.
If you suspect CO exposure, get everyone out of the house immediately and call emergency services. Do not go back in to investigate.
Here is what I recommend checking:
- CO detectors on every level of your home, especially near bedrooms
- Fresh batteries in every detector, tested monthly
- Avoid running a car in an attached garage for extended periods, as this is a common source of CO buildup
- Have gas fireplaces inspected before the first use of the season
With a 5 out of 5 star average review rating, I take my responsibility to my clients seriously, and that extends well past closing day. Safety in your new home matters to me.
Energy Assistance Programs You Might Not Know About
Even if you just bought a home in the Denver Tech Center or Greenwood Village area, it is worth knowing about Colorado’s LEAP program. LEAP provides eligible Coloradans with many benefits including between $200 and $1,000 in one-time heating assistance per eligible household.
Here is the surprising part: an estimated 80 percent of eligible Coloradans do not use the program. Many new homeowners assume they would not qualify, but eligibility is income-based and worth checking, especially if your household income shifted during a home purchase year.
Beyond the direct financial benefit, a LEAP approval can unlock secondary benefits including weatherization services and emergency furnace repair or replacement. That furnace inspection I mentioned earlier? If something significant is wrong, these programs can potentially help cover the cost.
Note that the HEAR Single-Family rebate program for the Front Range (Region 1) closed on August 1, 2026, so that particular rebate is no longer available. However, keeping an eye on future energy efficiency program phases is always worthwhile.
Frequently Asked Questions
When should I blow out my sprinkler system in Greenwood Village?
You should complete your sprinkler blow-out by mid-October in the Denver metro area, before the first hard freeze. If you are in the south metro area and need a referral for sprinkler blow-out, I can recommend a trusted service provider. This task is especially important for first-time homeowners who may not realize irrigation lines can crack when water freezes inside them.
How often should I change my furnace filter during a Colorado winter?
The Colorado PUC recommends changing your furnace filter once a month during winter. This simple maintenance task can reduce heating costs by an estimated 5 to 15 percent. Stock up on filters now so you have them on hand through March.
What temperature should I set my thermostat to in winter?
The Colorado PUC recommends 65 to 70 degrees Fahrenheit while you are home and 58 degrees when you are away during winter months. A programmable thermostat makes this automatic and helps you avoid heating an empty house.
Do I really need carbon monoxide detectors in my Greenwood Village home?
Yes, absolutely. Installing CO detectors throughout your home, especially if you have a gas furnace, fireplace, or attached garage, is essential. Test batteries monthly and replace detectors according to manufacturer guidelines.
What is the LEAP program and can new homeowners apply?
LEAP is Colorado’s Low-Income Energy Assistance Program, which opens for applications on November 1 each year. It provides between $200 and $1,000 in one-time heating assistance per eligible household. Eligibility is income-based, and approval can also unlock weatherization services and emergency furnace repair.
How much can I save by improving my home’s insulation?
Improving insulation in walls, crawl spaces, floors, and heating ducts can save up to an estimated 10 percent on monthly energy bills. Combined with draft sealing and proper thermostat settings, insulation improvements are among the most cost-effective winter preparations.
What temperature should my water heater be set to?
The Colorado PUC recommends setting your water heater to 120 degrees Fahrenheit. If yours is set higher, lowering it by 10 degrees can save an estimated 3 to 5 percent on water heating costs.
Where is my main water shut-off valve?
Common locations include the basement near the front foundation wall, a utility closet, or near the water heater. Find it before winter, tag it clearly, and make sure everyone in your household knows where it is. If a pipe freezes, shutting off water quickly can prevent major flooding.
Are there any active energy rebate programs for Greenwood Village homeowners in 2026?
The HEAR Single-Family rebate program for the Front Range closed on August 1, 2026, so it is no longer available. However, Colorado periodically launches new energy efficiency programs. Checking with the Colorado Energy Office for home energy rebates is a good habit for any homeowner looking to reduce costs.
What is the most commonly overlooked winter prep task for new Colorado homeowners?
In my experience working with first-time buyers in the south Denver metro, the sprinkler blow-out is the task most frequently missed. People who have never owned a home with an in-ground system simply do not know about it. A close second is locating the main water shut-off and furnace filter slot before an emergency forces you to find them in a rush.
The Bottom Line
Preparing your home for winter does not have to be overwhelming. Focus on the big-ticket items first: furnace inspection, sprinkler blow-out, and draft sealing. Then fine-tune your thermostat and water heater settings, install carbon monoxide detectors, and check whether you qualify for LEAP assistance starting November 1.
As a Certified Senior Advisor serving the south Denver metro, I pay extra attention to winter safety for my clients who are downsizing, because clear walkways, working CO detectors, and a reliable furnace matter even more as we age. I believe my job does not end at the closing table. Whether you need a sprinkler blow-out referral, recommendations for local service providers, or just want to talk through your winter prep checklist, I am here for you. You can reach me, Joanne Jordan, at 303-956-6656 or by visiting denvermetrorealtor.com. Let me help you settle into your new home with confidence, no matter what Colorado winter throws your way.