Mann Engineering

Working harder ≠ working better.
If your HVAC system is running constantly but the building still isn't comfortable, ΔT is one of the first things worth checking. It's the gap between the temperature going out and the temperature coming back and it tells you whether your system is actually delivering heat or just moving water around.
Healthy ΔT: around 11°C Poor ΔT: around 3°C
A low number means higher energy use, higher operating costs, and lower efficiency usually all at once.
Property managers: do you know what your building's ΔT looks like right now?
We're doing free pre-winter walkthroughs this fall. We'll find the inefficiencies before they show up on your January bill.
40+ years keeping Ontario buildings running.

MYTH: "We installed a 95% boiler, so the plant is operating at 95%."
REALITY: Condensing performance depends on your reset schedule and system design not the nameplate rating. Plenty of high-efficiency boilers never condense at all.
More myths this week 👀
Property managers, is your building winter-ready? Free walk through from Mann Engineering 40+ years leading Ontario building systems.

Cut energy use without a major retrofit. 🍂❄️ These 5 low-cost strategies can help buildings improve efficiency, reduce energy waste, and lower operating costs throughout the fall and winter.

From smarter heating schedules to better damper control and pipe insulation, small changes can lead to meaningful savings. ⚙️💡

Before you flip from cooling to heating mode: are your BAS schedules, setpoints and changeover sequences actually doing what you think they're doing?

More often than not, they aren't. Nobody notices until the complaints start.

Property managers, ready for winter? A free walkthrough from Mann Engineering will tell you. 40+ years, Ontario buildings.

Pre-winter maintenance that actually matters, not a checkbox exercise:

01 Boiler burner and combustion check 02 Water treatment and chemistry 03 Pump and VFD inspection 04 MUA damper, freezestat and filter check 05 Document everything

That last one is what tells you when something's about to fail.

Which has your team completed? Property managers, if the answer is "not sure," Mann Engineering will walk your building for free. 40+ years in Ontario.

❄️ Frozen coils 🔁 Short-cycling boilers 🌬️ Stuck economizer dampers 🌡️ Comfort complaints from unbalanced heating loops

Seeing any of these already? They rarely fix themselves.

Property managers, is your building ready for winter? Mann Engineering has been solving this for 40+ years across Ontario, and the wa

"Pre-season inspection" is vague. Here's what it actually means:

Boilers and burners · Heating-water pumps · Steam traps and controls · VAV and terminal boxes · BAS changeover sequences

It is simply a standard/benchmark and is not mandatory or legally required
Property managers, is your building ready for winter? Book a free walkthrough with Mann Engineering, 40+ years a market leader in Ontario building systems.

If you only have time for three things before fall:

1. Heating plant readiness
2. BAS heating-mode changeover
3. Envelope and ventilation leaks

Which one is already on your list?

Property managers, not sure where your building stands? Mann Engineering has 40+ years in Ontario building systems, and the pre-winter walkthrough is free.