Here at Carlson & Stewart Refrigeration we hear something like this all too often: “My cooler/freezer quit working last night….now all of my product is lost.” What do you do if your cooler or freezer stops working when you are away? More than likely you have something inside of that cooler or freezer that is […]
Remote Temperature Monitoring & Alarming Read More »
With fall fast approaching it is a great time to remind everyone about the importance of commercial refrigeration routine maintenance. Maintaining your systems for optimal energy efficiency is great for the environment and for your pocketbook. Whether you do the maintenance yourself or have a preventative maintenance agreement with Carlson and Stewart Refrigeration, the importance
Preventative Maintenance Basics – Condenser and Evaporator Coils Read More »
COVID-19 and Carlson & Stewart Refrigeration, Inc. Wow, the last month (more for others!) has been a whirlwind for every individual and every business around the world! Carlson & Stewart Refrigeration, Inc. has not been an exception! However, we are proud to say that our team members have stepped up to the plate and are
COVID-19 and Carlson & Stewart Refrigeration, Inc. Read More »
While we welcome the new year and all the challenges that come with it, the commercial refrigeration industry will see some energy efficiency changes. The Department of Energy (DOE) has implemented changes on new energy use standards that have become law across the country in 2020. We will also look at additional requirements that will
Energy Efficiency Changes 2020 Read More »
(source article: “IIAR Moves Forward on CO2 Standard”, November 2019 Condenser Magazine) Is CO2 as a refrigerant an option for you? Carlson & Stewart Refrigeration, Inc. can help point you in the right direction. CO2 is certainly gaining in popularity in the United States and more and more experience and guidance are supporting this
CO2 As A Refrigerant – IIAR Standard Read More »
Source: http://r744.com/articles/9222/eevs_should_be_standard_equipment_says_u_s_energy_consultant EEVs Should be Standard Equipment, Says U.S. Energy Consultant Electronic expansion valves (EEVs), which are used in commercial display cases to automatically control the flow of liquid refrigerant into a direct expansion evaporator, should be a “standard digital piece of equipment,” said Mike Guldenstern, founder and director of energy efficiency services, llc, an energy
EEVs Should be Standard Equipment, Says U.S. Energy Consultant Read More »
How many of you have “scale” on your evaporative condenser? [I am guessing your hand might be in the air]. How many of you feel that this is “normal” and something that should be treated as a “side effect” from running an evaporative condenser? [I am guessing your hand is still up]. Although scale buildup
THE EFFECT OF CONDENSER SCALE ON SYSTEM PERFORMANCE Read More »
Over the years of working in literally hundreds of compressor / engine rooms we have noticed a correlation between the cleanliness and neatness of the compressor room and the general operation of the refrigeration system. The neater the compressor room the better it works! Based on our experience here are a few things you can
HOUSEKEEPING AND GENERAL MAINTENANCE Read More »
We all know that refrigerant leaks cost money! The hissing sound of a leak is not so much SSSSSSSSSSSSSSS as it is $$$$$$$$$$$$$$$$! Let’s find and fix the refrigerant leaks in our systems. The first step is detection – we have to find the leak. For those of you that utilize ammonia as your refrigerant
REFRIGERANT LEAK DETECTION Read More »
This article will target refrigeration systems that utilize air cooled condensers, but the efficiencies to be gained apply to the users of evaporative condensers as well. First, let us remember a couple of important principles of refrigeration; 1) heat (energy) always flows from higher to lower temperatures, and 2) the function of the condenser is
CLEAN & EFFICIENT CONDENSERS Read More »