Satco 40W A15 Clear Appliance Bulb

The Satco 40W A15 clear appliance bulb solves the basic problem every contractor faces — finding a reliable replacement bulb that won’t fail prematurely in demanding appliance environments. Temperature rated up to +250°F means it handles oven applications without issue. 2500-hour rated lifespan under appliance conditions beats bargain bulbs that burn out after a few months.

Temperature Ratings and Real-World Durability

Temperature rated up to +250°F isn’t just a number on a spec sheet. That’s the difference between a bulb that survives oven cleaning cycles and one that doesn’t. The vibration resistant design matters when you’re dealing with refrigerator compressors cycling on and off all day.

Clear glass maximizes light output in enclosed fixtures where frosted bulbs would cut brightness. Teflon/PFA shatterproof coating on select models (S2840) adds insurance against thermal shock — though at Montana’s altitude, the bigger concern is usually cold-to-hot transitions when appliances kick on in unheated garages.

The 2500-hour rated life translates to roughly 3-4 years in a typical refrigerator application. Less in ovens due to heat cycling. Still beats the 1000-hour bulbs flooding the market.

Base Options and Electrical Specifications

Specification	Value
Wattage	40W
Voltage Rating	130V (compatible with 120V systems)
Base Types	Medium Screw (E26) or Intermediate (E17/E12 for specific variants)
Brightness at 130V	300 lumens
Brightness at 120V	225 lumens
Color Temperature	2700K (Warm White)
CRI	100
Beam Angle	360-degree

The 130V rating provides surge protection on standard 120V circuits. Montana’s rural power grids see voltage spikes during storms and equipment switching. That extra 10V buffer prevents premature burnout.

Ensure base type (E26 or E17) matches the appliance socket before purchase. E26 medium base fits most refrigerators and range hoods. E17 intermediate shows up in older ovens and specialty appliances. Dimmable when used with compatible dimmers, though few appliances use dimming.

Application-Specific Features

Appliance-specific design for high/low temperature environments covers the extremes — from freezer interiors at -10°F to oven cavities pushing 500°F during self-clean cycles. The design handles both without cracking.

Teflon/PFA shatterproof coating on the S2840 model adds protection for commercial kitchen environments. Worth considering for rental properties where tenants might slam oven doors.

Typically sold as a single bulb (carded) or in bulk cases (e.g., 240-pack) — the bulk option makes sense for property managers and contractors handling multiple units. Keep a case in the truck and you’re never caught short on service calls.

Frequently Asked Questions

What’s the actual lifespan in a refrigerator versus an oven? 2500 hours average translates differently by application. Refrigerators run 8-12 hours daily, giving you 3-4 years. Ovens see intermittent use but extreme heat cycling — expect 1-2 years depending on cooking frequency.

Why does the brightness drop from 300 to 225 lumens? 300 lumens at 130V and 225 lumens at 120V — the bulb runs slightly dimmer on standard household voltage but lasts longer. The trade-off works in your favor for appliance use where longevity beats maximum brightness.

Which SKU has the shatterproof coating? S2840 includes the Teflon/PFA coating. Other SKUs like S3720, S3810, S2744, S2741, S4160, S4164 use standard clear glass.

Can these handle Montana’s temperature swings? The +250°F temperature rating handles the hot end. Cold startup isn’t specified, but incandescent bulbs generally tolerate sub-zero starts better than CFLs or early LEDs. The filament heats up fast enough to avoid thermal shock.