HVAC Contractor in Orange County, CA

Licensed HVAC Contractor • Foothill Ranch, CA

HVAC Repair, Installation and Maintenance in Orange County

MaksBuilder is an HVAC contractor based in Foothill Ranch, serving Lake Forest and nearby South Orange County communities.

We troubleshoot AC systems that stop cooling, furnaces that fail to heat, heat pump faults and airflow problems between rooms. When replacement is needed, we assess the existing installation before recommending new equipment.

Residential HVAC Commercial HVAC Repair & diagnostics Installation & replacement
Call +1 949-740-0410 Request HVAC Service
MaksBuilder HVAC services for homes and businesses in Orange County
HVAC repair, installation and maintenance for homes and businesses in the MaksBuilder service area.
HVAC Services

HVAC Services for Homes and Businesses

Choose a service below or tell us what is happening with your system if you are not sure where to start.

View All Services →
AC Repair Diagnosis and repair for no cooling, warm air, freezing, short cycling and other air-conditioning problems. View AC Repair → AC Installation & Replacement Central AC replacement planned around cooling load, existing ducts, electrical requirements and installation access. View AC Installation → Heat Pump Installation Ducted heat pump installation and conversion with checks of system sizing, duct airflow, electrical capacity and outdoor-unit placement. View Heat Pump Installation → Heat Pump Repair Troubleshooting and repair for heating, cooling, airflow, control and defrost problems. View Heat Pump Repair → Furnace Repair Furnace service for ignition failures, shutdowns, cold air, weak airflow and other heating problems. View Furnace Repair → HVAC Maintenance Seasonal inspections and preventive service for cooling, heating, airflow, electrical and drainage components. View Maintenance Plans →
HVAC Diagnostics Furnace Installation Ductwork & Airflow Emergency AC Repair HVAC Financing Daikin HVAC Systems

Commercial HVAC Services

Rooftop units, HVAC repair, heating service, maintenance and replacement planning for commercial properties.

Commercial HVAC →
Clear Pricing

HVAC Service & Installation Pricing

Compare visit rates with starting equipment replacement prices. We discuss any additional diagnostic work or repair charges before the work is approved.

01 / Service

Service Visits

Residential and commercial visit rates

Standard residential visitFREE
Urgent / overnight residential visit$150
Basic furnace maintenancePlus filter costs$69
Commercial diagnostic visit$300

Extra testing, parts and repairs may be billed separately. When a diagnostic fee applies, it is credited toward an approved repair. What happens during an HVAC diagnostic visit.

Installation Planning

Free In-Home Installation Estimate

Maksym personally assesses the home. The written proposal identifies equipment options, the installation scope and pricing, including any ductwork or electrical changes identified during the visit.

  1. Home visitReview the existing system and installation conditions
  2. Written optionsEquipment selection and Manual J for each new system
  3. Installation & testingPermits for replacements, system testing and startup
Request your installation estimate
MaksBuilder coverage

Our Workmanship Warranty

1year

On repair work, replaced repair parts and standard new-system installation workmanship.

3years

Extended installation workmanship coverage applies for 3 years only with an eligible annual maintenance agreement, under the written warranty terms.

Manufacturer equipment warranties are separate.

Customer Reviews

What Our Customers Say

Feedback shared by customers on Google.

5.0/5Google Reviews
★★★★★

“Super helpful, honest and did an amazing job fixing my AC. Thank you so much!”

Nadine T.Google
★★★★★

“Prompt response and prompt appointment. Process of communication was easy and clear.”

Noha A.Google
★★★★★

“A/C Install was fast, efficient, and well done.”

Colin D.Google
See all customer reviews
Daikin Comfort Pro Dealer

Daikin HVAC Systems for Orange County Homes

MaksBuilder installs Daikin FIT systems and ductless mini-splits for homes in South Orange County.

For a ducted Daikin FIT system, we review the existing ducts and matching indoor equipment. For ductless installation, we check room-by-room needs, indoor-unit locations and refrigerant line routing.

Explore Daikin Systems Request a Free Estimate View Daikin FIT
MaksBuilder HVAC Daikin Comfort Pro recognition
MaksBuilder HVAC — Daikin Comfort Pro recognition.

Not Sure Which HVAC Service You Need?

Choose the problem you are seeing and go directly to the service that best matches it.

HVAC Diagnostics →
AC Not Cooling Warm air, freezing, short cycling or no cooling. No Heat Ignition problems, shutdowns or cold air from vents. Weak Airflow Low airflow from vents or uneven temperatures between rooms. Water or Ice Near the AC Drainage trouble, water around the unit or visible ice. New HVAC System New AC installation or replacement of an aging cooling system. Seasonal Maintenance Schedule preventive service before heavy cooling or heating use.
Local HVAC Contractor

South Orange County HVAC Service Areas

MaksBuilder is based in Foothill Ranch and serves Lake Forest, Irvine, Mission Viejo, Aliso Viejo, Rancho Santa Margarita, Laguna Hills, Laguna Woods Village, San Clemente, Laguna Niguel, Laguna Beach, Rancho Mission Viejo, and nearby communities within our service area.

Foothill Ranch HVAC Lake Forest HVAC Irvine HVAC Mission Viejo HVAC Aliso Viejo HVAC Rancho Santa Margarita HVAC Laguna Hills HVAC Laguna Woods HVAC San Clemente HVAC Laguna Niguel HVAC Laguna Beach HVAC Rancho Mission Viejo HVAC

See all service areas or provide the property address when requesting service.

Frequently Asked Questions

Is a standard residential HVAC visit free?

Yes. MaksBuilder lists the standard residential visit as free. The inspection depends on the reported problem and the equipment that can be accessed. Additional diagnostic testing, replacement parts and repair work may cost extra. The scope should be discussed before that work begins.

How much does an urgent or overnight HVAC visit cost?

An urgent or overnight residential visit is $150. Emergency visits are available around the clock Monday through Friday; Saturday and Sunday service hours are 8:00 AM–6:00 PM. Call (949) 740-0410 to confirm availability for your address.

Is a diagnostic fee credited toward a repair?

Yes. When a diagnostic fee applies, MaksBuilder credits it toward an approved repair. Ask how the credit applies to your specific appointment when reviewing the repair estimate.

How do I know whether to repair or replace my AC?

The decision depends on the confirmed fault, equipment condition, past repairs, parts availability and the current repair quote. An older AC system does not automatically require replacement. See AC Repair for the types of problems evaluated.

Does replacing an HVAC system require a permit?

MaksBuilder obtains a permit for each system replacement. The project may also involve HERS testing and city inspection. Confirm which permit and inspection costs are included in the written proposal before approving installation. See AC Installation & Replacement.

Request HVAC Service in Orange County

Call MaksBuilder at +1 949-740-0410 or send us the property location, HVAC equipment type and a short description of what you need.

Call +1 949-740-0410 Request HVAC Service

CA Contractor License #1095368. View license information.