Is the Klein IR5 accurate enough for HVAC work?

Yes for most duct, vent and register checks. Keep in mind the fixed emissivity, which can skew readings on shiny metal.

How close do I need to be for an accurate reading?

The 12:1 ratio means at 12 inches the spot is about 1 inch wide. Get closer for small targets, since the spot grows with distance.

Can it measure shiny metal surfaces?

Only roughly. Fixed emissivity is tuned for common matte materials, so reflective metals read low; use tape or paint on the target for better results.

What comes in the box?

The thermometer, a custom pouch and a battery. Check the battery type, since sources differ between AA and 9V.

How does it compare with the Klein IR1?

The IR5 adds dual aiming lasers, more measurement modes and a high/low alarm. The IR1 is simpler and single-laser.

Does it have a backlight and auto-off?

Yes. The display is backlit for dim spaces and the unit powers off automatically to save the battery.

Where can I buy the Klein Tools IR5 Dual Laser 12:1 Infrared Thermometer?

3 stores we checked sell it, including The Home Depot, JB Tools, Ace Hardware.

Klein Tools IR5 Infrared Thermometer Price History: Lowest $64.97

Q: Where is the Klein Tools IR5 Dual Laser 12:1 Infrared Thermometer cheapest?

At The Home Depot, for $64.97, as of our latest check.

What reviewers say

Owners and reviewers treat the IR5 as a solid, simple trade tool. They like the dual lasers, the fast readings and the rugged feel, and most find it accurate enough for HVAC and electrical work. The main complaints are the fixed emissivity and the wide spot at long distances.

What people mention

AimingPraisedOwners say the dual lasers make it easy to see exactly where the reading is taken.
AccuracyMixedMost find it accurate for vents and panels, but readings drift on shiny or reflective surfaces.
BuildPraisedReviewers describe it as sturdy and able to take drops and job-site handling.
Spot sizeCriticisedThe 12:1 ratio means the measurement area widens noticeably at longer distances.
Ease of usePraisedButtons are simple and the backlit display is easy to read in dim spaces.

From JB Tools

Dual-laser targeting helps aim at the measurement area
12:1 distance-to-spot ratio
Measurement range -22 to 752 °F (-30 to 400 °C)
Auto-scan plus max/min/avg/diff modes and high/low alarm
Backlit digital display with auto power-off
Drop protection to 6.6 ft (2 m)

Materials: Soft-touch, over-mold housing
Care: Replace the battery as soon as the low battery indicator appears; do not use the instrument if the case is damaged in any way
Guarantee: JB Tools offers a 100% satisfaction guarantee and a Warranty Program on all products it sells; as an independent re-seller it notes the manufacturer's warranty,
Returns: 60-day hassle-free return policy offering replacement (subject to availability) or a full refund less return shipping costs, at the customer's option
Shipping: Free USA shipping on orders over the stated threshold; shipping calculated at checkout; international orders not accepted during the store's move
In the box: Custom pouch, Batteries (1 x 9V)

About the Klein Tools IR5 Dual Laser 12:1 Infrared Thermometer

The Klein Tools IR5 is a battery-powered infrared thermometer for measuring surface temperature without contact. Two lasers help aim at the measurement area. It has a 12:1 distance-to-spot ratio and measures from -22 to 752 °F (-30 to 400 °C).

It has an auto-scan function, max, min, average and difference modes, and a high/low alarm. The digital display is backlit, and the thermometer powers off automatically. The housing is a soft-touch, over-mold design and is protected against drops to 6.6 ft (2 m).

Replace the battery as soon as the low battery indicator appears. Do not use the thermometer if the case is damaged in any way.