Mountain View HVAC Services

Top-Rated Heating & Cooling in San Jose & Beyond

Is your heater not working as well as it used to? Are you looking to install a new air conditioner? DG Heating & Air Conditioning has you covered. We are a full-service HVAC company that offers a wide range of services for all of your heating and cooling needs. Our Mountain View HVAC technicians can help you find the perfect solution for your home and ensure that it is functioning as efficiently as possible.

Call (408) 669-3496 or contact us online to learn more about our HVAC services or to schedule an appointment with one of our experienced technicians.

Why Is My HVAC System Not Turning On?

There could be several reasons why your HVAC system is not turning on. Here are some common troubleshooting steps you can take:

• Check the thermostat settings and ensure it has power.
• Verify the power source by checking the circuit breaker or fuse box.
• Replace dirty air filters to avoid airflow restriction.
• Ensure all air vents are open and unobstructed.
• Clear any clogs in the condensate drain.
• Check for ice buildup on the outdoor unit for heat pumps.
• Inspect the HVAC unit for visible signs of damage or malfunction.

If you're unable to identify or fix the issue, contact a qualified HVAC technician for assistance.

Signs You Need HVAC Repairs

Not sure if your HVAC system needs servicing? Look for these warning signs:

• Weak airflow – A clogged filter, leaky ducts, or a failing blower motor could be the culprit.
• Unusual noises – Grinding, squealing, or banging sounds indicate internal issues that need immediate attention.
• Frequent cycling – If your system turns on and off too often, it may be struggling with an improper thermostat setting or a malfunctioning component.
• Uneven temperatures – Hot and cold spots in different rooms often point to poor airflow, duct issues, or a faulty thermostat.
• Rising energy bills – A sudden increase in energy costs may indicate an inefficient system struggling to keep up.
• Foul odors – Musty or burning smells could signal mold growth, electrical issues, or a clogged air filter.
• Excess humidity – Your AC should help regulate indoor humidity. If you notice increased moisture levels, your system may not be functioning properly.
• Water leaks – Pooled water near your unit can indicate a clogged drain line or refrigerant leak.

If you notice these issues, call a professional HVAC technician to diagnose and fix the problem before it worsens.

Quality Heating & Cooling Services in Mountain View

At DG Heating & Air Conditioning, we understand that your HVAC systems are a big investment for your home. That is why we offer quality services and products that you can rely on. We are a proud Carrier Factory Authorized Dealer and have been recognized for our exceptional customer service and quality workmanship.

Our HVAC services include: 

• Heating
• Air conditioning
• Indoor air quality
• Commercial HVAC
• Maintenance
• Ductless HVAC

Why Choose DG Heating & Air Conditioning?

When you choose DG Heating & Air Conditioning for your HVAC services, you can expect:

• Quick response times – We know that you can’t go long without a properly functioning heater or air conditioner. When you call us, we will respond as quickly as possible to get you the services you need.
• Accurate diagnostics – Our technicians are highly trained and experienced. We will accurately diagnose the problem and provide you with the best solution.
• Quality workmanship – We have built a reputation for providing quality workmanship and exceptional customer service. We will not consider the job done until you are 100% satisfied.

Call DG Heating & Air Conditioning Today!

When you need HVAC services in Mountain View, choose DG Heating & Air Conditioning. We are a family-owned and operated company that is dedicated to providing our customers with the best possible service. We will work with you to find the perfect solution for your home and ensure that it is functioning as efficiently as possible.

Give us a call at (408) 669-3496 or contact us online to learn more about our HVAC services.

Commonly Asked Questions

How often should I replace my air filter?

For optimal performance, replace your HVAC filter every 1-3 months, depending on usage and air quality. Homes in areas with higher dust levels may require more frequent changes.

What is the best thermostat setting for energy savings?

Set your thermostat to 78°F in summer and 68°F in winter for energy efficiency. A programmable thermostat can help maintain comfort while reducing energy usage.

Why does my AC smell musty?

A musty smell could indicate mold or mildew buildup in your ductwork or evaporator coil. Regular maintenance and cleaning can help prevent this.

What is the best time to schedule HVAC maintenance?

Spring and fall are the best times to schedule maintenance, ensuring your system is ready for seasonal temperature changes.

Can I improve indoor air quality in my home?

Yes! Installing air purifiers, UV lights, or high-MERV filters can help reduce allergens and pollutants for better air quality.