Коль скоро теплопотери выросли, теплоизоляцию нужно проверить тепловизором.

Here коль скоро means since, given that, or seeing that. It introduces the reason for the action in the main clause.

So the logic is:

• Коль скоро теплопотери выросли = since heat losses have increased
• теплоизоляцию нужно проверить тепловизором = the insulation needs to be checked with a thermal imaging camera

In this sentence, коль скоро is causal, not temporal.

It is understandable and correct, but it sounds more formal, bookish, or slightly old-fashioned than the most everyday options.

More common alternatives would be:

• поскольку
• раз
• sometimes если уж

So a more neutral version might be:

• Поскольку теплопотери выросли, теплоизоляцию нужно проверить тепловизором.

Теплопотери is the plural form of теплопотеря. In technical or engineering language, Russian often uses the plural to mean heat losses in general.

Because the noun is plural, the past-tense verb must also be plural:

• теплопотери выросли = heat losses increased

That is why you get выросли, not выросла or выросло.

Yes. Both are natural here.

• выросли = increased, went up
• увеличились = increased, became larger

The difference is mostly stylistic:

• выросли is very common and slightly less formal
• увеличились can sound a bit more technical or official

So both work well in this sentence.

Because it is the direct object of проверить.

You are checking what?

• теплоизоляцию

The dictionary form is теплоизоляция. In the accusative singular, it becomes теплоизоляцию.

This is a regular pattern for feminine nouns ending in -ия:

• изоляция → изоляцию
• информация → информацию
• ситуация → ситуацию

This is an impersonal construction:

• нужно = it is necessary / one should / needs to
• проверить = to check

So теплоизоляцию нужно проверить literally means something like:

• The insulation needs to be checked
• It is necessary to check the insulation

There is no explicit subject here. Russian often leaves it general. If you want to say who must do it, you can add a dative pronoun or noun:

• Нам нужно проверить теплоизоляцию. = We need to check the insulation.
• Специалистам нужно проверить теплоизоляцию. = The specialists need to check the insulation.

Because the sentence refers to a single, complete check.

• проверить = perfective, to check and complete the check
• проверять = imperfective, to be checking / to check regularly / as a process

So:

• нужно проверить = it needs to be checked
• нужно проверять = it needs to be checked regularly / one should be checking it

In this sentence, the speaker means one concrete inspection, so проверить is the natural choice.

Because it expresses the tool or means used to do the action.

• проверить тепловизором = to check with a thermal imaging camera

Russian often uses the instrumental case for instruments:

• писать ручкой = to write with a pen
• резать ножом = to cut with a knife
• измерять прибором = to measure with an instrument

The basic form is тепловизор, and the instrumental singular is тепловизором.

You could also say:

• с помощью тепловизора = with the help of a thermal imaging camera

That is a bit more explicit, but the instrumental alone is very normal.

Because Коль скоро теплопотери выросли is a subordinate clause, and it comes before the main clause.

Russian normally separates this kind of clause with a comma:

• Коль скоро теплопотери выросли, теплоизоляцию нужно проверить тепловизором.

This is similar to English punctuation in a sentence like:

• Since heat losses have increased, the insulation needs to be checked.

Yes. Russian word order is flexible, though different orders sound slightly different in emphasis.

The original order is natural because it gives the reason first, then the action:

• Коль скоро теплопотери выросли, теплоизоляцию нужно проверить тепловизором.

You could also say:

• Теплоизоляцию нужно проверить тепловизором, коль скоро теплопотери выросли.

That version is also correct, but it sounds a bit heavier and less neutral. The original is smoother.

A learner should be careful here. In this sentence, коль скоро does not mean as soon as. It means since / given that.

So here it is about reason, not time.

If you want clear temporal meaning like as soon as, Russian more naturally uses expressions such as:

• как только
• сразу как
• sometimes когда

So in this sentence, interpret коль скоро as causal, not temporal.