The Extech EX363 True RMS HVAC Digital Multimeter is a professional electrical testing instrument designed for HVAC engineers, heating technicians and maintenance professionals. Combining AC/DC voltage, microamp current, temperature, resistance, frequency and capacitance measurements, it provides essential diagnostic functions for heating, ventilation and air conditioning systems.
Accurate HVAC Testing and Electrical Fault-Finding
The EX363 measures AC/DC voltage up to 1000V, resistance up to 40MΩ and frequency up to 100kHz. Its dedicated 600µA measurement function supports flame rod testing on heating equipment, while Type K temperature measurement allows technicians to check temperatures from -40°C to +394°C.
True RMS technology improves accuracy when measuring distorted AC waveforms, while the Low Impedance (LoZ) function helps eliminate misleading readings caused by ghost voltages. Built-in non-contact voltage detection provides an additional way to identify the presence of AC voltage before carrying out further checks.
How does the EX363 stand out in everyday use?
The EX363 features a 6000-count backlit display, a fast analogue bargraph and Smart Data Hold, which alerts users when a held measurement changes significantly. Its CAT IV safety rating, protective holster and built-in magnetic mount make it a practical choice for HVAC servicing, heating system diagnostics and electrical maintenance.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on orders over £99
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
