Las Vegas homes HVAC problems in November

Late October/Early November is actually tricky in Las Vegas - daytime temps can still hit the 70s-80s°F while nights drop into the 50s. Many homes need both cooling during the day and heating at night, which means the system switches between modes frequently. This is hard on older HVAC units, especially one that's been running for 10+ years.

The holiday season is coming fast - Thanksgiving is in 3 weeks, Christmas in 8 weeks. Mid-November through January is the busiest time for HVAC contractors. If your furnace/heater breaks right before during holiday season, youl call various local HVAC companies for help and hear "we can get someone out in 3-5 days". Not because they don't want to help you, but because they are busy as hell. It's just always like that in this time of a year. Every year. Emergency weekend/holiday service calls cost 2-3 times more (think $400-600 instead of $150-200). Parts are also take longer to get during holidays when suppliers are closed.

If your HVAC system wasn't maintained for a while, and especially if it's 10+ years old, here's what you should do ASAP:

Top Priority Checks

Get a professional inspection NOW - Before winter demand hits, have an HVAC tech evaluate

• Heat exchanger cracks - Critical safety issue. A 12-year-old furnace could have cracks that leak carbon monoxide
• Thermostat calibration - If it's original to the house, it may read incorrectly or struggle with auto-switching between heat/cool
• Ductwork condition - Desert dust and other factors can mean significant leaks (Las Vegas homes often lose 20-30% of heated/cooled air through ducts)

Common Late Fall Problems in Las Vegas

1. Dust accumulation - Desert dust clogs everything. The outdoor condenser coils likely need cleaning, and the indoor blower assembly probably has buildup affecting airflow.

2. Pilot light/ignition issues - If it's a gas furnace that hasn't run in 6+ months, the pilot or electronic ignition often fails on first use. Have them test the heat now, not at midnight when it's 40°F outside.

3. Reversing valve problems (if heat pump) - Some Vegas homes use heat pumps instead of furnaces. The valve that switches between heating and cooling can stick from inactivity.

What You Can Do YOURSELF

Task #1 - Change the Air Filter

1. Turn off your HVAC system at the thermostat
2. Find the filter - usually in a slot where the big return vent is (often in a hallway or closet)
3. Pull out the old filter - look at the arrow on the frame showing airflow direction
4. Take the old filter to Home Depot or Lowe's to match the size (written on the frame, like "16x25x1")
5. Buy a MERV 8-11 rated filter - costs $8-15 (NOT the cheapest, NOT the most expensive)
6. Slide new filter in with arrow pointing the same direction as old one
7. Mark your calendar to change it again in 60-90 days

TASK #2 - Test Your Heating System

Your heater most likely hasn't run since last winter (6+ months ago). Heaters don't usually break while they're off. First startup of the season is when problems usually show up. So would you rather find out there's a problem now, when it's a comfortable 70°F outside and you've got time to deal with it? Or at 2am when it's 40°F and you're desperate? First startup problems caught early are easy fixes.

Test it now while you don't actually need it. That's just smart.

1. Set thermostat to HEAT mode
2. Set temperature to 78°F (5-10 degrees above current room temp)
3. Wait 5-10 minutes
4. Listen carefully - do you hear clicking, then the whoosh of ignition, then the blower fan?
5. Go to each room - do you feel warm air coming from vents?
6. Smell carefully near vents - any weird burning smell? (Slight dusty smell first 15 minutes is normal; strong burning or gas smell is NOT normal)

What you're checking for:
♦ System turns on without problems
♦ Warm air flows from all vents
♦ No strange noises (loud banging, grinding, squealing)
♦ No gas smell or strong burning smell

TASK #2 - Check and Clean the Outdoor Unit

Las Vegas dust is brutal - it coats everything. Your outdoor unit (the big box outside) gets covered in dust, dirt, cottonwood seeds, and debris. This often makes the system work much harder and can cause it to overheat and fail.

1. Turn off power - find the electrical disconnect box mounted on the wall near the outdoor unit, flip the switch or pull the block
2. Visual inspection
   • Is the unit sitting level? (If tilted, refrigerant doesn't flow properly)
   • Any rust or corrosion on the cabinet?
   • Are the metal fins bent or damaged?
   • Any plants or junk within 2 feet of it? Clear everything away
3. Cleaning
   • Use your garden hose with spray nozzle
   • Spray the fins from the INSIDE out (you'll see the metal fins - spray gently through them to push dirt out)
   • Don't use high pressure - you'll bend the fins
   • Let it dry for 30 minutes
4. Check the area
   • Trim back any bushes or plants - keep 2 feet clear on all sides
   • Make sure nothing is blocking the top of the unit
5. Turn power back on

Smart Preventive Steps

• Test both heating and cooling now while weather is mild
• Listen for unusual noises - grinding, squealing, or banging means bearings or belts are wearing out
• Check for uneven heating - Some rooms significantly colder means duct problems or zoning issues
• Look at the outdoor unit - Should be level, clear of debris, and have at least 2 feet of clearance
• Consider age - At 10+ years, the system is approaching end-of-life (typical lifespan is 12-15 years), budget for potential replacement

Keep in mind that if you noticed and want to solve any heating issues - Get a Professional Inspection. DO NOT SKIP THIS!
Some problems are invisible and dangerous. A certified HVAC technician has tools and training you don't have access to. With the help of Nevada Residential Services Heating and Cooling experts you will get back the comfort of your Las Vegas home in no time. Don't delay, schedule HVAC maintenance / inspection this week! In this case you'll get an appointment within 2-3 days, or maybe, with a bit of luck even that same day. Wait until mid-November, and you might wait 1-2 weeks. Wait until it breaks down, and you're freezing while waiting for help during the busiest time of year.