We’re no strangers to Iowa’s extreme weather. Whether it’s a summer heatwave or a subzero winter night, your HVAC system becomes your home’s unsung hero. However, when it breaks down unexpectedly, the stress and expenses can quickly become overwhelming. The good news? Most emergency HVAC failures are preventable.
Since 2009, Lenz Heating & Cooling has proudly served Des Moines homeowners with fast, reliable HVAC solutions rooted in integrity, expertise, and family values.
Want to avoid surprise repairs? These tips will help keep your HVAC humming year-round.
1. Change Your Air Filters Regularly
Clogged filters are one of the most common causes of HVAC strain and failure.
Dirty air filters restrict airflow, forcing your system to work harder than necessary. This not only reduces efficiency but also increases the risk of overheating and system failure.
For most Des Moines homes, check your air filter every month and replace it every 1 to 3 months. If you have pets, allergies, or a busy household, you should replace it more frequently.
Pro Tip: Mark your calendar or set a monthly reminder on your phone. It’s an easy and affordable way to protect your system.
2. Schedule Seasonal HVAC Maintenance
Think of tune-ups like oil changes for your HVAC system.
A professional HVAC inspection and tune-up helps catch small problems before they turn into big ones.
At Lenz, our 28-point inspection covers all the critical components of your system, from refrigerant levels to thermostat calibration. This ensures everything is running safely and efficiently.
Bonus: Enroll in our HVAC Service Agreement for automatic reminders and priority service. Choose from three affordable plans starting at just $99/year.
3. Watch for Early Warning Signs
Sometimes, you don’t have to guess if your system’s efficiency is at risk. Your HVAC often tells you something’s wrong before failing.
Watch and listen for these red flags:
- Banging, screeching, or buzzing noises
- Uneven temperatures or cold spots
- Weak airflow
- Sudden energy bill increases
- Frequent on/off cycling
- Burning smells or unusual odors
If you notice any of these, don’t ignore them. Get in touch with our team before the issue turns into an emergency.
4. Keep Outdoor Units Clean and Clear
Leaves, grass clippings, dirt, and even snow can obstruct airflow and damage components, so make sure your outdoor unit has space to breathe.
Make it a habit to:
- Clear 2–3 feet of space around your outdoor unit
- Gently rinse off debris with a hose
- Trim back bushes or plants that grow too close
In winter, make sure your heat pump or exterior unit isn’t buried in snow or ice. A little upkeep goes a long way toward year-round reliability.
5. Upgrade Your Thermostat for Smarter Performance
A smart thermostat is a simple upgrade that saves you money on energy bills and helps you detect issues with your HVAC system before they become problems.
Not only does it allow for precise temperature control, but it also reduces strain by preventing unnecessary heating and cooling. Smart thermostats even provide alerts if something seems off with your system.
Need help choosing or installing the right one? Our experts can help you find the best fit for your home and budget.
6. Seal Leaks and Improve Insulation
Believe it or not, your home’s condition could be the real reason behind HVAC issues.
Leaky ducts, drafty windows, and poor insulation make your system work overtime. Use weatherstripping, seal gaps, and consider upgrading insulation in attics or basements.
Pro Tip: If some rooms feel too hot or too cold, ask us about HVAC balancing or ductwork inspections to improve comfort.
7. Don’t Delay Repairs
Waiting too long to fix a minor issue can lead to a major breakdown.
If your system isn’t running like it used to, don’t wait for it to fail completely. The sooner you call our expert team, the faster and more affordable the repair will be.
With 24/7 emergency HVAC service throughout, we’re always here when you need us. But we’d rather help you avoid emergencies altogether.
Put Your HVAC System in Expert Hands with Lenz Heating & Cooling
From Altoona to Winterset and everywhere in between, Des Moines homeowners trust Lenz Heating & Cooling to keep their homes comfortable, efficient, and breakdown-free.
Our family-, veteran-, and woman-owned business is proud to serve the community with expert care and upfront honesty.
When you choose our service, you receive:
- No overtime fees when you sign up for a Service Agreement.
- Transparent pricing—you’ll know the exact cost upfront.
- Experienced technicians with 100+ years combined.
- Flexible financing to fit your budget.
With regular maintenance, smart upgrades, and early attention to warning signs, you can avoid costly HVAC emergencies and enjoy reliable comfort all year long.
Schedule your service today and discover the dependable care you deserve!






