Categories HVAC repair

Residential Mitsubishi CITY MULTI Heat Pump Repair in Huntington Beach

Mitsubishi CITY MULTI freon charging

Residential Mitsubishi CITY MULTI Heat Pump Repair in Huntington Beach

A Huntington Beach homeowner’s Mitsubishi CITY MULTI heat pump wasn’t cooling properly, so they called our HVAC experts for help. We found a refrigerant leak in two of the system’s four indoor coils, plus rust on the coil from a bad drain design. Below is a breakdown of the problem, our AC repair solution, and the results.

freon leak

Problem Diagnosis

Refrigerant Leak in Two Evaporator Coils

The home’s cooling performance had dropped noticeably. Our technicians traced the issue to low refrigerant (Freon) and pinpointed leaks in two of the four indoor evaporator coils. A refrigerant leak like this not only hinders cooling but can also damage the heat pump’s compressor if left unchecked.

Rust from Improper Drain Design

We also found rust on the coil due to water from an improperly designed condensate drain. The original drain line wasn’t set up correctly, causing water to collect in the drip pan. Over time, that standing water caused significant rust on the evaporator coil.

Repair Solution

Replacing Leaking Fan Coils

For a lasting fix, we replaced the two leaking indoor fan coil units with new coils. After installing them, we recharged the system with the proper refrigerant. This restored the heat pump’s full cooling power.

mitsubishi city multy heat pump

mitsubishi city multy heat pump

Redesigning the Drain Lines

Next, we corrected the drainage setup. Our technicians reworked the condensate drain lines with proper slope and routing to ensure water flows into the drain pan and safely outside.

Results: Restored Comfort and Reliability

After these repairs, the CITY MULTI heat pump system is back to keeping the home cool and comfortable. With no more Freon leaks, the new coils are performing efficiently, and the improved drainage means no more water damage or rust. The homeowner noticed better cooling right away and now has peace of mind with a reliable, rust-free HVAC system.

All Set Service provides dependable residential HVAC and appliance repair services across Orange County. This Huntington Beach heat pump repair is a prime example of our commitment to quality workmanship and customer satisfaction.

Categories HVAC repair Posted on
Categories HVAC repair

Commercial Heat Pump Repair in Westminster, CA – Freon Leak & Evaporator Coil Replacement

AC repair in Westminster CA

A commercial facility in Westminster, CA had a Carrier split-system heat pump that was struggling to maintain cooling. Our licensed HVAC service team responded quickly to diagnose this commercial heat pump repair issue and restore proper performance.

 

AC repair in Westminster CA

 

Diagnosing a Freon Leak in the Carrier System

Our certified HVAC technician performed a thorough inspection of the heat pump. We discovered a refrigerant leak, indicated by low pressure and frost on the evaporator lines. Using electronic leak detection, we pinpointed the source at the evaporator coil inside the air handler. A Freon leak in the coil severely reduces cooling and could damage the compressor, so an immediate repair was needed.

 

Evaporator Coil Replacement Under Warranty

The faulty evaporator coil needed replacement. Fortunately, the unit was still under Carrier’s manufacturer warranty, so the coil part was provided at no cost. Our team obtained the proper replacement coil and proceeded with the repair.

Step-by-Step Repair Process

  • Refrigerant Recovery: Safely recovered the remaining refrigerant from the system using approved equipment.

  • Coil Removal: Removed the old leaking evaporator coil from the indoor air handler.

  • New Coil Installation: Installed the new Carrier evaporator coil, sealing all connections properly.

  • System Evacuation: Evacuated the refrigerant lines with a vacuum pump to remove air and moisture.

  • Recharge: Recharged the system with the correct type and amount of refrigerant (per manufacturer specifications).

  • Testing: Tested for any leaks and verified the heat pump’s proper operation in cooling and heating modes.

     

Results and Professional Service

After the coil replacement and refrigerant recharge, the heat pump’s performance was fully restored, providing efficient cooling to the commercial space again. The repair was completed promptly to minimize downtime for the business.

Our client also benefited from the warranty coverage, saving on the cost of the new coil. All work was carried out by our licensed, insured HVAC company with certified technicians, ensuring the job met all safety and quality standards. We take pride in thorough diagnostics, step-by-step repairs, and supporting our customers with reliable, warranty-backed HVAC service in Westminster and the surrounding area.

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Categories HVAC installation, HVAC repair

Common HVAC System Types

Residential home in Orange County with modern HVAC setup

All Set Service is a licensed HVAC company serving Orange County, California. We understand homeowners and small businesses have many heating and cooling options. Below we explain the most common HVAC system types, how they work, and when each is ideal. All Set Service installs and services all these system types, so you can trust our team with any heating and cooling setup.

 

Residential home in Orange County with modern HVAC setup

 

Types of HVAC Systems

  • Split (Central) Systems: These are the traditional whole-house systems. An outdoor condenser unit cools the air, while an indoor furnace or air handler provides heating through ducts. A single thermostat controls both. In Southern California’s mild climate, split systems often use electric heat pumps that move heat in or out rather than burning gas. This makes them energy-efficient for year-round comfort. Split systems are ideal for most single-family homes and small offices.

  • Ductless (Mini-Split) Systems: Ductless mini-splits heat or cool without any ductwork. Each indoor zone has its own wall-mounted air handler connected by a refrigerant line to an outdoor compressor. You can install one indoor unit per room (or multiple heads on one outdoor unit), giving precise zone control. Ductless systems are perfect for room additions, garages, or buildings without ducts, and they work well in multifamily homes or small commercial spaces.

  • Packaged (Rooftop) Units: These systems house all heating and cooling components in a single outdoor cabinet. Often placed on a roof or on a slab by the building, they connect to the ductwork through one wall. Packaged units save indoor space and simplify installation because everything is in one box. They are common in light commercial buildings or homes without basements. Because of the compact design, packaged systems are easier to install and service while still providing full comfort.

 

Commercial rooftop HVAC unit installed on a flat roof

 

Regardless of the type you choose, All Set Service installs and services all these HVAC systems. We are based in Huntington Beach and serve Orange County cities like Irvine, Costa Mesa, Newport Beach, Santa Ana and beyond. Whether you need a central split system, a ductless mini-split, or a rooftop packaged unit, our licensed team will provide the right HVAC installation in Orange County and keep it running smoothly.

Categories HVAC installation, HVAC repair Posted on
Categories HVAC repair, Maintenance

Old Package Unit, New Life

002 preview package unit repair

Case Study: How All Set Service Revived a 45-Year-Old HVAC Unit in Huntington Beach

In Huntington Beach, a business owner was faced with a daunting problem: a 45-year-old package HVAC unit that had stopped working. The system ran on older R22 refrigerant and seemed beyond hope. Other HVAC companies had examined the unit and recommended a full replacement due to its age and condition. However, the business owner turned to us at All Set Service for a second opinion, and our team was determined to find a better solution.

002 01 package unit repair

An All Set Service technician diagnosing the HVAC system’s internal electrical components. After extensive, challenging diagnostics, our experienced technicians discovered the cause of the breakdown was not catastrophic – it was actually a minor issue with some electrical components and wiring. These problems had been overlooked by others, causing the unit to be misdiagnosed as needing replacement. We repaired the faulty wiring and replaced a problematic electrical part, essentially bringing the system back to life.

Once the repair was completed, our team didn’t stop there. We performed thorough maintenance to help the aging system run as efficiently as possible. We replaced the air filter and carefully cleaned the condenser coil to remove accumulated dust and debris. Afterward, the 45-year-old unit was cooling properly again, much to the customer’s relief and delight.

002 02 package unit repair

This success story highlights the professionalism and problem-solving expertise of our team. Even when faced with an old, seemingly unsalvageable HVAC system in Huntington Beach, we demonstrated that careful diagnostics and dedication can yield a cost-effective solution. The customer was extremely happy to avoid the expense of a full replacement. We were proud to have restored comfort to their office with a small fix and some TLC.

Categories HVAC repair, Maintenance Posted on