AMERICA'S HEATING & COOLING STORE.™

Need Help? Call
800-865-5931
MON-FRI 8:30am-5:00pm Central

SUPPORT

SATISFIED CUSTOMERS

ABOUT US

SHOPPING CART

Equipment Sizing
Estimator

System Selector
Let Us Help You

Operating Cost
Calculator

Contractor
Assistance

Installation
Videos

Huge Tax Credits Available!

LEARNING CENTER
for Air Conditioning / Cooling

We ship to Canada!

One of our Thousands
of Satisfied Customers

Tom Messink writes:
"Installation was straight forward. An easy one-day job for those of us who are weekend warriors!"

Evaporator Coil Orifices

An orifice (also referred to as a piston or flowrater) is installed in an evaporator coil when the coil is a different tonnage rating than the condenser or heat pump tonnage rating. Installation takes about 5 minutes, and consists of replacing orifice already inside coil. We have an online picture step-by-step guide which shows how to do this.

If you are installing a new evaporator coil and can not find manufacturer-specific information for your outdoor air conditioner or heat pump, use this chart as a reference to ensure a properly sized orifice is installed in your system.

	R-22	R-410A
Tonnage	Orifice Size	Orifice Size
1.5 Ton	0.053	0.047
2 Ton	0.059	0.053
2.5 Ton	0.071	0.059
3 Ton	0.076	0.071
3.5 Ton	0.080	0.076
4 Ton	0.082	0.080
5 Ton	0.090	0.090

<< First

< Previous

Next >