Wash temperature?

I've switched to ATL1000 processor and I'm using it as per specification connected to hot water source with precise thermostatic mixing valve so that temperature of water is 38°C. But as I'm having some works done in my bathroom and i need to develop film during the works time I'm concerned about wash temperatures. I've made the custom program and reprogrammed the processor so I could use C41RA chemistry, so it goes like this:

1. Developer 03:15
2. 2% Acetic acid stop 00:30
3. Water Rinse 02:00
4. Rinse from the bottle to wash drain system 00:30
5. Bleach 02:00
6. Water Rinse 03:00
7. Rinse from the bottle to wash drain system 00:30
8. Fix 02:00
9. Water Rinse 04:00

If i connect processor directly to tap water where temperature is around 22°C, temperature variations will be high. For an example step 2 is 38°C, step 3 is 22°C, step 4 is again 38°C... Can I damage the film (reticulation, emulsion cracks...)?

In the end, i've shot a test roll and everything was fine.

C-41 film is hardened and very resistant to reticulation due to temperature change so you have that going for you.