New Heat Pump & Air Handler Installation in Otis Orchards

Written by Norm Bealer

When a homeowner in Otis Orchards noticed their old HVAC system struggling to keep up, they called our team for a full upgrade they could rely on. After evaluating the home and reviewing the replacement options, we installed a new Lennox heat pump and air handler to restore dependable year-round comfort. With permits approved and final inspections passed, the homeowner now has a high-efficiency system built for Spokane County’s seasonal swings.

Job Overview

Location: Otis Orchards, WA
Client Type: Single-family homeowner
Scope: Full HVAC system replacement
Equipment Installed: Lennox ML14XP1-048-230 heat pump, new air handler, heat strip, new line set
Additional Work: Electrical and mechanical permits, thermostat circuits, condensate line work
Why It Mattered: The homeowner needed a reliable, efficient system to replace an aging setup and meet local code requirements

What We Found

During our initial inspection, we found that the existing HVAC system was outdated and no longer operating efficiently. The heat pump and air handler showed signs of wear, and the components were struggling to maintain temperature during colder weather. The existing line set and wiring also required upgrades to properly support the new equipment. In addition, the condensate pump setup needed an electrical outlet for safe, code-compliant operation.

The Solution

Our installers began by safely removing the old indoor and outdoor units and preparing the space for the new Lennox system. A new line set was installed to ensure clean, efficient refrigerant flow. We set the ML14XP1 heat pump outdoors, leveled and secured it, then installed the new air handler and heat strip inside the home.
We completed all required electrical circuits, including thermostat wiring and support for the air handler and heat pump. Our team also handled the mechanical and electrical permit requirements, coordinated inspections, and ensured all work met Spokane County and Washington State L&I standards. Once everything was connected, we pressure-tested, charged, and verified refrigerant levels, then ran a full system startup to confirm proper airflow, heating, and cooling performance.

The Results

After installation and testing, the home now has a smooth-running, high-efficiency HVAC system ready for all seasons. The upgraded heat pump provides dependable heating and cooling, while the new air handler delivers quieter, more consistent airflow. The homeowner benefits from improved comfort, greater reliability, and a system built to operate efficiently for years to come.

Solutions, Not Surprises

If you’re in Otis Orchards or the Greater Spokane area and considering a new HVAC system, our team at Mainstream Electric, Heating, Cooling & Plumbing is here to help. We install high-quality systems built for the Inland Northwest climate and handle everything from permits to final testing. When you’re ready for a quote or want to explore replacement options, schedule online or give us a call.

A/C, Heating, HVAC

Frequently Asked Questions

What is a heat pump and how does it work?

A heat pump is a versatile and energy-efficient heating and cooling system that works by transferring heat between indoor and outdoor environments. Unlike traditional heating systems that generate heat, a heat pump moves heat from one place to another, making it an efficient solution for both heating and cooling needs.

Here’s how a heat pump works:

Heating Mode: In heating mode, the heat pump extracts heat from the outdoor air (even in cold temperatures) and transfers it indoors to heat your home. This process is achieved through the refrigeration cycle, where refrigerant absorbs heat from the outdoor air, passes through a compressor to increase its temperature, and releases the heat indoors through a condenser unit.
Cooling Mode: Conversely, in cooling mode, the heat pump operates like an air conditioner by removing heat from indoors and transferring it outside. The refrigerant absorbs heat from indoor air, moves it outdoors, and releases it into the atmosphere, resulting in a cooler indoor environment.

Key benefits of heat pumps include:

Energy Efficiency: Heat pumps are highly energy-efficient, as they utilize heat transfer processes rather than generating heat from combustion or electrical resistance. This can lead to lower energy bills and reduced carbon emissions compared to traditional heating systems.
Dual Functionality: Heat pumps provide both heating and cooling capabilities in a single system, offering year-round comfort and convenience. This versatility eliminates the need for separate heating and cooling systems, saving space and installation costs.
Consistent Comfort: Heat pumps deliver consistent and even heating and cooling throughout your home, eliminating hot or cold spots often experienced with traditional HVAC systems.
Environmentally Friendly: By relying on heat transfer processes and using electricity rather than fossil fuels for heating, heat pumps produce fewer greenhouse gas emissions, making them a more environmentally friendly heating and cooling solution.
Quiet Operation: Heat pumps typically operate more quietly than traditional HVAC systems, providing a quieter and more comfortable indoor environment.

At Mainstream, we offer a range of high-quality heat pump systems tailored to your home’s specific heating and cooling needs. Our expert technicians are experienced in heat pump installation, maintenance, and repair, ensuring optimal performance and energy efficiency for your home.

Contact Mainstream today to learn more about our heat pump solutions and how they can enhance comfort and efficiency in your home. With Mainstream, experience reliable heating and cooling solutions designed for modern living.

What are the most common signs that a heat pump needs repair?

Common signs that your heat pump needs repair include unusual noises, reduced heating or cooling efficiency, and frequent cycling on and off. If you notice any of these issues, it’s crucial to call Mainstream Home Services in Spokane Valley, WA. Our expert technicians are available 24/7 to diagnose and fix your heat pump problems promptly, ensuring your home stays comfortable year-round.

How often should heat pumps be serviced to prevent the need for repairs?

To maintain peak performance and prevent costly repairs, heat pumps should be serviced at least once a year. Mainstream Home Services offers comprehensive maintenance plans to keep your heat pump running efficiently. Regular servicing by our skilled professionals ensures your system remains in top condition, providing reliable comfort for your home in the Greater Spokane and Northern Idaho areas.

Does Mainstream Home Services offer 24/7 emergency heat pump repair services?

Yes, Mainstream Home Services offers 24/7 emergency heat pump repair services. Whether it’s day or night, weekends or holidays, our team is always ready to provide fast and reliable service without extra fees. Contact us anytime to ensure your heat pump issues are resolved quickly and efficiently.