REFRIGERANT CHARGE

Why didn’t I just “top off” your refrigerant?

A system does not use up refrigerant. If it is low, there is a leak. We verify charge with measurements — pressures and temperatures compared with the manufacturer’s targets — instead of adding refrigerant by feel.

WHAT TO LOOK FOR

Signs you might notice.

Ice on the copper lines or the indoor coil
Weak cooling on hot afternoons
A system that was “recharged” before and is low again

WHAT WE DO ABOUT IT

We measure superheat and subcooling with connected instruments, document the readings, and talk about leak search before adding refrigerant.

PICTURES & VIDEO

Photos and short videos from real Hampton Roads homes are being added to this page. Ask during your visit — we are happy to show you on your own system.

GO DEEPER

Guides on this topic.

All guides

HVAC updates

R-32 refrigerant: understanding the next generation

Why refrigerants are changing and what to ask when comparing new equipment.

Reviewed Oct 1, 2026Read the guide

FOR TECHSFIELD NOTES

New refrigerant rules: what actually changed for Virginia techs

OTHER TOPICS

Static pressure & airflowWhat was that gauge I put on your ductwork?FiltersWhy did I recommend a media filter?Combustion & carbon monoxideWhat was I measuring in your furnace flue?DuctworkWhat did I see in your attic?Humidity & dehumidificationWhy does humidity matter so much here?Geothermal heat pumpsHow does your geothermal system actually work?Tankless water heatersIs a tankless water heater right for this house?Daikin inverter systemsWhat makes an inverter system different?Sizing (Manual J, S & D)Why did I measure your whole house before quoting?

CARE WITH A CLEAR RECORD

Know your system.
Plan its care.

Explore maintenance, the measurements behind our recommendations, and what to confirm before joining a plan.

Explore maintenance Our testing & documentation

YOUR LOCAL COMFORT TEAM

Let’s talk about your home.

Schedule your service