Air Filtration Experts in the Central Valley

//Breathe Cleaner with Cencal Mechanical

Keeping your home at the right temperature all year round is always important to us at Cencal. But making sure the air you’re breathing in your home is clean and healthy is also our priority. We install high-efficiency HVAC systems with industry-leading air filtration technology.

The experts at Cencal Mechanical can upgrade your existing furnace or air conditioner’s filtration, too! We fit today’s most advanced air filters with your existing HVAC systems. Our indoor air quality (IAQ) specialists can help keep your family healthier and happier with clean, contaminant-free air for your whole home.

Our Total Satisfaction Promise

Our Total Satisfaction Promise

We never consider our work a job well done until we have your stamp of approval! And we’ll always leave your home cleaner than we found it.

The Cencal Craftsmanship Guarantee

The Cencal Craftsmanship Guarantee

Enjoy peace of mind with a LIFETIME WARRANTY on selective parts and components. If anything goes wrong with equipment we service in the first year, we’ll fix it—for free!

No-Surprise Pricing

No-Surprise Pricing

Our specialists are experts when it comes to quoting work. You’ll be given a total price for a completed service before we start the job. There’s never a payment surprise when you choose Cencal.

Our Family, Your Neighbor

Our Family, Your Neighbor

Cencal Mechanical remains a family-owned and operated business with humble beginnings in Modesto, CA. We’re proud to have grown across the Central Valley, but our community values have never wavered.

In Modesto and throughout the Central Valley, our trucks are stocked and ready to help the communities we love. We’re the reliable indoor air quality experts in California who care.

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At Cencal Mechanical, we believe everybody deserves to stay comfortable in their own home. That’s why we offer flexible payment plans and financing options for indoor air quality equipment installations.

//HVAC Air Filtration FAQs

You can always contact our team with questions about indoor air filtration installations, upgrades, or replacements. Here are some questions our customers often ask!

Why Do I Need an Air Filter?

Air filtration is an essential part of any HVAC system. Not only do air filters extend the life of your heating and cooling systems and keep your ducts cleaner, but they also keep you and your family safer.

Air filters trap particles and contaminants in your home’s air supply before the air is distributed throughout your living space. The outside air used to heat or cool your home may contain:

  • Allergens
  • Dust
  • Dirt
  • Pollen
  • Pet hair & dander
  • Smoke & other fumes
  • Bacteria & viruses
  • Mold spores

Proper air filtration helps prevent you and your family from getting headaches, coughs, dry eyes, sore throats, allergies, sneezing fits, and sinus congestions. Allergy-sensitive households should consider investing in top-rated air filtration.


What’s the Best Type of Air Filter?

Different HVAC systems can support different types of air filters. Cencal Mechanical performs structural upgrades to your existing furnace or air conditioner to make sure that you can enjoy the most advanced air filter technology.

The most common types of HVAC air filters include:

  • Disposable Fiberglass: these filters are affordable but have a low MERV rating. They will block large particles and debris.
  • Disposable Pleated: the most common type of filter, these provide better air quality because the pleats create more surface area for filtering.
  • Permanent Reusable: a type of filter that can be washed and reused. They are more expensive and require regular cleaning but can last up to 5 years.
  • HEPA Filters: these filters are the most efficient at trapping particles and contaminants. They have the highest MERV rating and are commonly used in hospitals and other spaces that are air-quality-sensitive.


What’s a MERV Rating?

The minimum efficiency reporting value (MERV) is a rating that describes how well an air filter removes impurities. These values range from 1 to 20. The higher the value, the higher the quality of the air passing through the filter.

Ratings are determined by measuring the size (in microns) of the smallest particles that can pass through the filter. The highest-rated air filters are also the most efficient.

What is a HEPA Filter?

HEPA stands for high-efficiency particulate air (filter). These filters remove almost 100% of airborne particles, including dust, pollen, mold, and bacteria. The most air-quality-sensitive spaces, such as a hospital, use HEPA filters in their HVAC systems.

Not every home requires a HEPA filter and not every HVAC system is equipped to house one. But one of our IAQ specialists at Cencal can evaluate your home’s air quality and make recommendations. If you have people prone to allergies in your household, this may be the right choice for air filtration.

Cencal offers furnace and air conditioning framework upgrades so that you can always breathe the cleanest air possible, even if you have an older HVAC system.

How Often Do I Need to Change My Air Filter?

Furnace and AC filters should be changed about every 90 days. Making sure your system is equipped with capable air filtration is the first step, but filters that are too dirty or clogged will stop serving their purpose.

Heating maintenance and AC maintenance are essential for removing all the airborne contaminants that can affect the air you breathe at home. Make sure to follow your IAQ specialist’s advice on how to best manage and maintain your air filtration system.

//Become a Cencal Gold Member & Save

The Cencal Gold Membership gives you peace of mind knowing that your home is protected all year round. Members enjoy bi-annual maintenance on their home comfort HVAC systems.

Join the most comprehensive Membership coverage in the industry. Members are insured against unexpected, costly repairs, and your home will never be without a functioning air conditioning system.

Enjoy the Cencal Gold Member Benefits

  • FREE Bi-Annual HVAC Tune-Up
  • 10% Off Parts for All Service Calls
  • NEVER Pay Diagnostic Fees
  • NEVER Pay for Overtime Labor
  • Front-of-the-Line Service for All Repairs & Maintenance
Become a Member Today
Memberships with Cencal Mechanical Heating & Air Inc.

Cencal Mechanical Services

We specialize in delivering premium HVAC services to homeowners across the Central Valley.

When it comes to staying cool, keeping warm, and improving your indoor air quality, Cencal is your first call. Even if we didn’t install your air filtration equipment, don’t hesitate to call us!

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//We’d Love to Hear From You!

Our team is at the ready 7 days a week. So don’t hesitate to reach us for inquiries about AC, home heating, or anything else HVAC related.

Fill out the form, and one of our specialists will be in touch soon to get you on your way to cool, comfortable living.

//What Our Customers Say About Cencal

“Cencal has serviced our HVAC for several years—technicians are very polite and knowledgeable, arrive on time and always clean up.  Recently we had to replace our upstairs unit — the owner took time to discuss options and provide recommendations.  Cencal then installed the unit professionally, efficiently & at a fair price, took care of all of the paperwork, including filing the utility rebate, and went out of their way to make us feel like a valued customer.  Highly recommend!”

Jenny G.

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