Mercader Heating Cooling & Ventilation

Mercader Heating Cooling & Ventilation runs HVAC work out of Riverside. The outfit handles new system installs such as Daikin heat pumps, AC repairs when units blow hot air, routine maintenance on central air setups, part replacements like start assist batteries, voltage protection additions, and heat exchanger swaps on tankless water heaters. Technicians named in the work include Gustavo, Miguel, Ruben, Cory, Corey, Emmanuel, Zach, Eli, and Jose. They show up for both full installs and single service calls on older equipment that has gone years without attention.

Customers report solid results on these jobs. One case involved a full heat pump placement where the crew built a custom stand and took extra time to finish the setup right. Another had Ruben sorting an AC that stopped cooling, with clear explanations and tips passed along even when translation help was needed for family. Maintenance visits by Cory or Corey often include full system checks, quiet fan fixes after part swaps, and cleanup before leaving. Install teams like Eli and Jose finished work the same day they arrived, kept sites tidy, and handled add-on requests without delays.

The crew stays on schedule and communicates straight during visits. Reviewers note they arrive when promised, explain findings in plain terms, answer questions without rushing, and leave the area clean. Same-day completion comes up for both repairs and installs, along with patience during longer explanations. Work covers Riverside jobs on homes with ten-year-old systems and newer units alike, with focus on getting the equipment running quiet and protected from power issues.

The record shows steady praise for on-time arrivals, clear talk, thorough checks, and quality finishes that last. Google lists 4.9 from 1274 reviews, with repeated notes on professional conduct and efficient handling of installs plus service. DIRT Score 4.9 from 1274 reviews on Finds.

DIRT Score = confidence-weighted rating across verified review platforms. How is this calculated? →

“Gustavo and Miguel installed my new Daikin 7 Heat pump Purchased through RKM. World class installation in my opinion! They took their time and went above and beyond my expectations! I thought they were just changing my system but see the attached photos of what they did with my stand etc! Great job, worth every penny and would highly recommend RKM heating and Air!”

“Excellent Experience. RKM came out to fix our AC when it started blowing hot air, and Ruben was fantastic. He was professional, highly knowledgeable, and gave us great feedback and recommendations for our unit. He was also incredibly patient while I translated everything for my parents. We truly appreciate the outstanding customer service and would recommend RKM and Ruben to anyone in need of HVAC help!”

“Excellent service call. Cory was on time, very courteous, dressed professionally, and was very thoughtful and polite. He took the necessary time to inspect the hvac system thoroughly and presented his findings in a way that could easily be understood. Afterwards he asked if there were any questions and cleaned up after himself. This is what every service call should be like! No other service provider has made service calls to this high level of quality, professionalism, and integrity. Kudos to RKM for their service commitment, and dedication of their staff.”

“Technician Corey came out today to provide maintenance service for the Central Air system. He was courteous and professional answering all of our questions. We needed to get a start assist device battery part replaced on a 10 year old system that has never been serviced. We also opted for a voltage protection/current controller to help protect the system from power just surging in. After he was done, the fan was very quiet compared to what it was. There was a grinding noise every start up before ,no more now. RKM, a Rinnai vendor, also did the heat exchanger replacement for the tankless water heater, a year ago, with Technician Emmanuel. He also did an excellent job. RKM is not the least expensive, but they do the job correctly. Sometimes that is better than the few dollars saved with another company. Thank you RKM and Corey! Mike and Lisa”

“Wow! Corey came was on time and friendly. Got everything done the same day. Also, was able to get his boss Zach to come in and look at some other stuff I wanted done and they were able to help me with everything. It exceeded my expectation. Very efficient professional people. Funny guys too. Update: Eli and Jose came by and did all the install. They were so much faster than I expected. Very nice guys, good communication, on time, efficient. They kept everything very clean. Quality work!”